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100

By the time the committee finally __________ its decision next Friday, the researchers __________ on the project for more than three years. 

A) announces / will work
B) will announce / will have been working
C) announces / will have been working
D) announced / have worked

Answer: C) announces / will have been working

100

She __________ for the company for ten years before she finally __________ to move abroad last summer.

A) had been working / decided
B) was working / had decided
C) has worked / decided
D) worked / decides

Answer: A) had been working / decided

100

At this time tomorrow, we __________ through the mountains while the rest of the group __________ at the hotel.

A) will be driving / is resting
B) are driving / rested
C) drive / will rest
D) have been driving / rests

Answer: A) will be driving / is resting

100

He looked exhausted because he __________ all night preparing the presentation that he __________ this morning.

A) had been working / was delivering
B) has worked / delivers
C) was working / had delivered
D) worked / is delivering

Answer: A) had been working / was delivering

100

By next year, scientists predict that they __________ a cure that __________ millions of lives.

A) discover / saves
B) will have discovered / will save
C) discovered / saved
D) have discovered / saves

Answer: B) will have discovered / will save

200

I __________ him several times this week, but he still __________ none of my messages.

A) contacted / replied
B) have contacted / has replied to
C) contact / is replying
D) had contacted / replied to

Answer: B) have contacted / has replied to

200

When I arrived at the station, the train __________ already, and everyone who __________ for it was gone.

A) left / waited
B) had left / had been waiting
C) has left / waits
D) was leaving / waited

Answer: B) had left / had been waiting

200

If everything goes according to plan, by the end of this month the company __________ its new branch and __________ over 200 employees.

A) opens / hires
B) will have opened / will have hired
C) opened / hired
D) has opened / hires

Answer: B) will have opened / will have hired

200

Right now she __________ to prove that the theory which scientists __________ for decades is actually incorrect.

A) tries / believed
B) is trying / have believed
C) tried / had believed
D) has tried / believe

Answer: B) is trying / have believed

200

Before they __________ the contract tomorrow, both parties __________ every clause in detail.

A) sign / will review
B) will sign / review
C) sign / will have reviewed
D) signed / reviewed

Answer: C) sign / will have reviewed

300

I am always coming, but never arrive. What am I?

Answer: Tomorrow

300

What occurs once in a year, twice in a week, but never in a day?

Answer: The letter E

300

If you throw me out the window, you’ll leave a grieving wife. But leave me in the middle of the door, and I might save somebody’s life. What am I?

Answer: The letter N


300

What has one head, one foot, and four legs?

Answer: A bed

300

I am not alive, but I can die.
I do not breathe, but I need air.
What am I?

Answer: Fire

400

The more honest I am, the harder I am to see.
What am I?

answer: glass

400

I can be broken without being touched.
I can be given and taken away.
What am I?

Answer: A promise

400

What gets sharper the more you use it?

Answer: Your brain / mind

400

What will you actually find at the end of every rainbow?

The letter ‘W’

400

If the vice president were to die, who is supposed to be president?

The President

500

By the time the rescue team finally reached the mountain village, the storm ______ for more than twelve hours, and several roads ______ completely by landslides.

A) raged / blocked
B) had been raging / had been blocked
C) was raging / were blocked
D) has raged / have been blocked

Answer: B) had been raging / had been blocked

Explanation:

  • “By the time” + past event → action before it takes past perfect
  • continuous action = had been raging
  • passive completed action = had been blocked
500

If she ______ more attention to the warning signs earlier, she ______ the problem before it became serious.

A) paid / can solve
B) had paid / might have solved
C) has paid / could solve
D) would pay / had solved

Answer: B) had paid / might have solved

Explanation:
This is a third conditional (past unreal):

  • if + past perfect
  • would/might/could have + past participle
500

The group of students, each of whom ______ responsible for submitting an individual report, ______ asked to remain after class.

A) are / were
B) is / was
C) was / were
D) were / was


Answer: D) were / was

Explanation:

  • “each of whom” refers to students individually → were
  • main subject = the group (singular) → was


500

The manager said that the new policy ______ by the board the following week and that all employees ______ about it in advance.

A) will approve / informed
B) would be approved / would be informed
C) had approved / were informed
D) was approving / inform

Answer: B) would be approved / would be informed

Explanation:
Reported speech in the past shifts future → would
Passive future in reported speech:

500

Rarely ______ such an impressive performance from a young musician, and the audience ______ standing for several minutes after the concert ended.

A) we had seen / remained
B) had we seen / remained
C) we saw / had remained
D) had seen we / remain

Answer: B) had we seen / remained

Explanation:
After negative adverbs like rarely, never, hardly, inversion is needed:

M
e
n
u