Exercise 2:

1, If you are not careful, you will cut yourself.

2, If you don’t keep silent, you won’t understand the lesson.

3, If you don’t keep silent, you will wake the baby up.

4, If you want to lose weight, you should do the morning exercise regularly.

5, If you study hard, you will get good marks.

6, If you save your money, you will be able to buy the house.

7, If you don’t do it, you will feel sorry afterwards.

8, If you play sports, you will keep fit.

9, If you don’t go out more often, you will fall ill.

10, If you are not careful, you will fall off your bike.

LESSON 3

Exercise 1:

1, was

2, could

3, stopped

4, knew

5, had

6, wasn’t

7, knew

8, had

9, knew

Exercise 2:

1, I wish I had time to study.

2, I wish I could answer the questions.

3, We wish we lived in the city but we don’t like it.

4, I wish my younger brother didn’t play in the street all day.

5, I wish I could come to the party.

6, I wish she wasn’t absent from the party.

7, I wish I could go to Lan’s birthday party.

8, She wishes she knew the way to the post office.

9, I wish you weren’t making a lot of noise.

10, I wish we went away more often.

11, I wish I were a film star.

12, I wish I was able to cook.

13, I wish the school was not so expensive.

14, I wish I had enough money.

15, I wish I knew many people.

LESSON 4:

1, The window was broken and some pictures were taken away by the boy.

2, A lot of money is spent on advertising every day.

3, The box has been locked and it cannot be opened by me.

4, The cake is being cut with a sharp knife by Mary.

5, The woman with a red hat was looked at by the children.

6, The victims have been provided with food and clothing by them.

7, This machine mustn’t be used by you after 5:30 pm.

8, The bill has to be paid by them before the first of the month.

9, The bridge is being built and will be finished soon by them.

10, After class, the chalkboard will always be erased by one of the students.

11, The wall must be cleaned before you paint it.

12, A car is going to be bought by my parents tomorrow.

13, His story is not believed.

14, I was told about it by a man.

15, She wasn’t invited to the party,

16, This stick used to be carried by a blind man.

17, The new pupil was told where to sit.

18, Several questions will be asked by them.

19, A story is going to be told by the teacher.

20, Luckily, my name was not called by them,

21, These exercises can’t be done by me.

22, This little boy can be taken notice of.

23, Empty bottles must not be thrown away by you.