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.
