1. which should be accompanied by the course book.

2. a lot of homework to do.

3. was not any place for us to sit.

4. clever of him to work out the answer.

5. he crossing the road hurriedly.

6. not dark enough for us to see stars clearly.

7. would be unwise to lend Tom money.

8. her buy a motorbike.

9. small for us to play football.

10. difficult to reach the others cities.

11. for old people to shop in supermarket.

1. There's a workbook which the coursebook should be accompanied.
2. These students had a lot of homework to do.
3. There was no place for us to sit. 
4. I was clever of time to work out the answer.
5. I noticed that he crosses the road hurriedly.
6. It's lear enough for us to see the stars.
7. You should not lend Tom any money.
8. Her parents didn't let her buy a motorbike.
9. THe garden is too small for us to play football in.
10. It was so difficult for the other cities to reach.
11. It's difficult for old people to shop in the supermarket.