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100

The Chinese (invented/have invented) paper.

invented (simple past--historical fact)

100
This is the third piece of cake that you (ate/have eaten) today.
have eaten (present perfect--from past until present)
100
She (died/has died) four months ago.
died (simple past--completed action, finished time period)
100

My notebook isn’t here anymore. Someone (took/has taken) it.

has taken (present perfect--recent past action affecting/related to present) MINUS POINTS!!!

100
The car industry (suffered/has suffered) huge losses since the factory workers began their strike.
has suffered (present perfect--from past until present) MINUS POINTS!!!
200
They (finished/had finished) eating dinner by the time I got home.
had finished (past perfect--past even completed before a second past event) MINUS POINTS!!!
200

When they (arrived/have arrived) at the party, Sue (already went/had already gone) home.

arrived, had already gone (past perfect--past even completed before a second past event)

200

When he (slammed/had slammed) the door, the picture (fell/has fallen) off the wall.

slammed, fell (simple past--past actions connected to each other)

200
She said she (paid/had paid) the bill a week before.
had paid (past perfect--reported speech of completed past action)
200
How long (were you/have you been) a doctor?
have you been (present perfect--from past until present)
300

At last, I ___ my project. Now I can take a break.

a. completed b. had completed c. have completed d. was completed

c. have completed (present perfect--recent completed action)

300

When I ___ shut off my computer, it crashed.

a. tried to b. had tried to c. have tried to d. try to

a. tried to (simple past--past actions connected to each other)

300

How many times ___ to this CD today?

a. were you listening b. had you listened c. have you listened d. do you listen

c. have you listened present perfect--from past until present 

300

She said that her husband ___ fishing the previous night.

a. had go b. has gone c. would go d. had gone

d. had gone (past perfect--reported speech of completed past actions)

300

Once I ___ dinner, I sat down to watch TV.

a. ate b. had eaten c. have eaten d. was eating

b. had eaten (past perfect--unconnected past actions)

400
When I (open) the window, the cat jumped in.
opened (simple past--past actions connected to each other)
400

He cannot drive us today because he (lost) his car keys.

has lost (present perfect--recent past action affecting/related to past) MINUS POINTS!!!

400
When I (finish) washing the dishes, I did some vacuuming.
had finished (past perfect--unconnected past actions)
400
The police found that the criminal (leave) his house at least two hours before the robbery took place.
had left (past perfect--past even completed before a second past event)
400
At last I (finish) all the homework exercises.
have finished (present perfect--recent completed action)
500

He is said to catch the train for Tokyo yesterday morning, but nobody knows where he is now.

catch → have caught (past perfect--reported speech of completed past action)

500

I studied Korean for the past five years, but I still have difficulty speaking and writing the language.

studied → have studied (present perfect--from past until present) / have been studying (present perfect progressive)

500

They had visited the museum before they will go to the park.

will go --> went

500
When I was in high school, I had often wished to be taller.
had often wished → often wished (simple past--completed action, finished time period) MINUS POINTS!!!
500

He has wished to change jobs, but ended up not doing so.

has wished → had wished (past perfect--unrealized past hope)