Zero & First
Second
Third
Unless
I wish/If only
100

Complete:

If you heat ice, it _____ (melt).

If you heat ice, it melts.

100

Complete: 

If I ______ (have) more money, I ______ (buy) an electric car.

If I had more money, I would buy an electric car.

100

Complete: 

If she ______ (study) harder, she ______ (pass) the exam.

If she had studied harder, she would have pass the exam.

100

Complete with if or unless: 

You’ll fail the exam ______ you study.

You’ll fail the exam unless you study.

100

Complete: 

I wish I ______ (speak) five languages.

spoke (o could speak)

200

Correct the mistake:

If it will rain tomorrow, we will stay at home

If it rains tomorrow, we will stay at home.

200

Correct the mistake:

 If I would be the mayor, I will plant more trees.

If I were the mayor, I would plant more trees.

200

Correct the mistake: 

If the police had arrived earlier, they would catch the criminals.

If the police had arrived earlier, they would have caught the criminals.

200

Transform using unless: 

If you don’t recycle, the landfills will fill up.

Unless you recycle, the landfills will fill up.

200

Correct the mistake: 

I wish I have more free time.

I wish I had more free time.

300

Complete: 

If you ______ (not report) a cyber-crime, the criminal ______ (do) it again.

If you don't report a cyber-crime, the criminal will do it again.

300

Transform:

 I don’t have time, so I don’t volunteer.

If I had time, I would volunteer.

300

Transform: 

The company dumped chemicals, so the fish died.

If the company hadn’t dumped chemicals, the fish wouldn’t have died.

300

Correct the mistake: 

Unless you don’t report the crime, the criminal will escape.

Unless you report the crime, the criminal will escape.

(unless ya es negativo)

300

Transform:

I’m sorry I didn’t study for the exam.

I wish I had studied for the exam.

400

Complete: 

If the government ______ (pass) stronger laws, fewer forests ______ (destroy).

If the government passes stronger laws, fewer forests will be destroyed.

400

Complete (passive): 

If plastic ______ (ban), the oceans ______ (be) cleaner.

If plastic were banned, the oceans would be cleaner.

400

Complete (passive): 

If the law ______ (introduce) earlier, many species ______ (save).

If the law had been introduced earlier, many species would have been saved 

400

Transform using if... not: 

Unless governments protect endangered species, they will disappear.

If governments don’t protect endangered species, they will disappear.

400

Complete: 

If only people ______ (stop) throwing plastic into the sea!

If only people would stop throwing plastic into the sea!

500

Correct the 2 mistakes: 

If the police will catch the hacker, he will be punish by the court.

If the police catch the hacker, he will be punished by the court.

500

Correct the 3 mistakes:

If I was the president, I will make stricter laws and criminals would punished more severely.

If I were the president, I would make stricter laws and criminals would be punished more severely. 

500

Correct the 2 mistakes: 

If the witness hadn’t call the police, the crime wouldn’t have been discover.

If the witness hadn’t called the police, the crime wouldn’t have been discovered.

500

Complete: 

Unless stronger laws ______ (pass), endangered species ______ (continue) to be hunted.

Unless stronger laws are passed, endangered species will continue to be hunted.

500

Correct the 2 mistakes: 

I wish I would have reported the crime when I saw it, and I wish my city is cleaner now.

I wish I had reported the crime when I saw it, and I wish my city were cleaner now.