1.    Understanding English is very hard.

→ It is…………………………………………………………………………………………………………………………

2.    The teacher allowed Tom to leave the classroom.

" The teacher let……………………………………………………………………………..……………………………

3.    The children did the exercise in fifteen minutes.

" It took……………………………………………………………………………………….………………………………

4.    Answering her questions is impossible.

→ It is………………………………………………………………………………………………………………………….

5.    My grandfather is very old, so he can’t play soccer.

→ My father is………………………………………………………………………………….…………………………

6.    Foreign languages are not easy to learn.

→ It is……………………………………………………………………………………………….………………………….

7.    He drove his bicycle to school in about ten minutes.

" It took……………………………………………………………………………………………………………………….

8.    He worked out the answer. It was clever of him.

" It was…………………………………………………………………………………………….………………………….

9.    He made such a mistake. It was stupid of her.

" It was…………………………………………………………………………………….………………………………….

10.  Contacting her at work is usually quite easy.

" She is………………………………………………………………………………………………………………….........

11.  The patient had the doctor test his eyes.

" The patient wanted………………………………………………………………………..……………………………….

12.  I had my father repair my bike.

" I wanted………………………………............………………………………………………………………………......

13.  The suitcase was so heavy that the boy couldn’t carry.

" The suitcase was too……………………………………………………………………………………………………..

14.  The girl was so shy that she didn’t look at him.

" The girl was too……………………………………………………………………………………………………………

15.  I will have my friend translate this letter for you.

" I will ask…………………………………………………………………………………………………………………….

16.  He should turn off the lights before leaving the house.

" I asked………………………………………………………………………………………..……………………………

17.  The students should do all their homework before going to school.