14．I ________(接到)a letter from him after he left．

13．Half of the ________(乘客)on the bus are from America．

12．Children, help ________(你们自己)to some fruit．

11．They will sell the house with fine ________(家具)．

10．Please don't do that again．I think it's a w________ of time．

B)根据汉语提示，写出空缺处单词的适当形式。

9．All these things can get m________ into many new useful things．

8．I don't know if you have finished f________ the radio set．I want to get it back．

7．We must do something to protect our environment from p________．

A)根据句意及首字母提示，写出空缺处单词的适当形式。

6．I'm better at history than Jean, but I'm w________ at French．