1. Complete! If Charlie were always on time, _____________.

• he would be more popular with his friends
• he could have caught the bus
• Jane will not be mad at him
• Fred need't teach him to read the clock

2. Meaning! If I had locked my flat, the thief wouldn't have stolen all my money.

• I locked my flat, but the thief could steal my money.
• I will lock my flat, so that nobody can come in.
• I didn't lock my flat, so the thief could steal my money
• I want the thief to steal my money

3. Correct! If the cat catched the mouse, it would get a treat.

• If the cat catched the mouse, it became a treat.
• If the cat caught the mouse, it would get a treat.
• If the cat caught the mouse, it would become a treat. 
• If the cat caught the mouse it got a treat.

4. Meaning! If you had a dog, you'd have to care for it.

• You will never have a dog.
• You had a dog.
• You have a dog.
• You don't have a dog.

5. Correct! Paper starts burning if you put fire near it.

• Paper will start burning if you put fire near it.
• Paper start burn if you put fire near it
• Paper start burn if you will put fire near it.
• This sentence is correct.

6. Complete! __________, Jane would've bought the car.

• If she has had enough money
• If she have had enough money
• If she had enough money
• If she had had enough money

7. Correct! If it wouldn't be so hot, I didn't sweat.

• If it wasn't hot, I wouldn't sweat.
• if it didn't be hot, I would not sweat.
• If it wouldn't be hot, I didn't sweet.
• If it wasn't so cold, I wouldn't sweat.

8. Complete! If you heat water, ___________.

• it will start boiling in 2 seconds
• it starts boiling at 100°C
• it freezes
• it starts boiling at 35°C

9. Meaning! If you lie in the sun for to long, you will get sunburnt.

• You don't have to be careful, this is never going to happen.
• You should be careful this is going to happen.
• You shouldn't be careful at all.
• You've never had a sunburn, so don't worry

10. Correct! If Greg have learnt at the test, he would've passed.

• If Greg had learnt for the test, he would has passed.
• If greg had learnt at the test, he would've passed.
• If greg has learnt for the test, he would've passed.
• If greg had learnt for the test, he would've passed.