2、　 Mary is a good student. She is always ready _______(help) her classmates.

1、There ________ (not be) enough food for everybody to eat at home.

　 You had better _______ (go) and _______(buy) some.

10.　 The students must do their homework of _________.

9.　　　 We picked some apples，and the others fell _______.

8.　　　 Robert fell down and hurt _______ yesterday.

7.　　　 James and Jane enjoyed _______ at the party.

6.　　　 Tom，you're old enough to do everything _________.

5.　　　 The wind is very strong，the door must be closed _______.

4.　　　 Take good care of ________ when you are alone.

3.　　　 I am very happy to see the Great Wall ________.