10.　 Everyone should make a contribution to ___________________ the environment. (improve)

9.　　　 Look, the Blacks ___________________________ trees by the river. (plant)

8.　　　 They played so _____________________ that they lost the football match. (care)

7.　　　 You won’t know the result until you ______________________ reading the story. (finish)

6.　　　 You may be __________________ if you are in trouble and have no one to help you. (worry)

5.　　　 Chocolate is usually ____________________ favourite food. (child)

4.　　　 The clever girl could teach ______________________ English when she was ten. (she)

3.　　　 Houses in some cities now are much _________________________ than before. (expensive)

2.　　　 The students from America live on the ______________________ floor. (nine)

1.　　　 Your present is in one of the _________________ . Can you guess? (box)