1. Tell him about this story if you .........................(see) him.
2. If you ..........................(have) a day off where you..............(go)?
3. If he ..................(cook) the meal himself, help him.
4. If few people .....................(come) to the meeting, please postpone to the other day.
5. If it .......................(not, be) warm this afternoon, we ...................(put off) the game.
6. Your father ...............(pick) you up if you ..................(come) back late?
7. What you ..................(speak) if you ....................(meet) a foreigner?
8. Unless he .................(answer) all my questions, I ...................(not, help) him.

Bài tập 2: Rewrite these sentences by using conditional sentence Type I
He will pay me tonight; I will have enough money to buy a car.
=> If…………………………………………………………….
I will get a work permit. I will stay for another month.
=> If……………………………………………………………..
Study hard or you won’t pass the exam.
=> If…………………………………………………………………..
Don’t be impatient or you will make mistakes.
=> If……………………………………………………………………..
I will come if they invite me.
=> unless……………………………………………….
Leave me alone or I’ll call the police.
=> Unless……………………………………………………………
7. The climate will change unless we reduce the use of non-renewable energy.
=> If ..........................................................................................................
8. Lock all the doors and noone can break into your house.
=> If ..........................................................................................................
9. Stop talking or you won’t understand the lesson
=> If ………………………………………………………………………..
10. Fail to pay and they will cut off the electricity.
=> If ………………………………………………………………………..
11. Don’t touch that wire or you may get an electric shock.
=> If ………………………………………………………………………..