Câu 1:

1 will be 

2 will ask/see

3 got up

4 rains/won't be able

5 would take

Câu 2:

1 will help

2 doesn't come

3 driven/wouldn't have

4 doesn't be/wouldn go

5 trusted

6 sold

7 were/wouldn lend

8 are

9 askes

10 looked after

Câu 3:

1 would have visited

2 would have won

3 had arrived

4 had been

5 would have been

Ex1

1 Marry will be woried if you don't come to the station

2. I will ask Tom if I see him tommow

3. If he got up earlier, he'd get to work on time

4. If it rain this weekend, we will not ba able to play tennis

5. If he had a car, he would take you to HCM city

   Ex2

1. they will help you if they have the time

2. If the bus doesn't come, we'll go buy car

3. If you drive more carefully, you won't have so many accident as last year

4.If he weren't sick, he would go to school yesterday

5. I could help you if you trusted me more

6. If he sold more product, he'd earn more

7. If i were you yesterday, i would lend her my car

8. There will be trouble if they try to stop him leaving

9.I'll do it if he asks me

10. If you looked after my car, it couldn't go away

  Ex3

1. If I had khnow that you were in hospital, I would have visted you

2, the ground was very soft. but for that my hourse could win

3. if you arrived ten minutes earlier you would have got a seat

4. You would have seen my garden at its best if you had been here last week

5. But for his quickness I had been killed