Unit 5 Music Learning about language课时作业

Ⅰ.语法填空

　　1．Muriel has made a __________ (value) contribution to our company's success.

　　[答案]　valuable

　　2．Many dolphins can dive to a __________ (deep) of 200 metres.

　　[答案]　depth

　　3．Soon after that, the young army officer __________ (promote) to the rank of captain.

　　[答案]　was promoted

　　4．I grew anxious: What if the family had simply left the cat __________？

　　[答案]　behind

　　5．He used to be __________ (extreme) shy but now he can talk freely to anyone he meets.

　　[答案]　extremely

　　6．If you meet with any difficulty in your study, don't be __________ (discourage)．

　　[答案]　discouraged

　　7．I don't see why I couldn't do it. __________ any case, I'm going to try.

　　[答案]　In

　　8．__________ (trap) in the flood, many people could do nothing but wait.

　　[答案]　Trapped

Ⅱ.选词填空