Unit 9 单元测试
（一）听力（略）
（二）笔试部分（100分）
IV. 单项选择（15分）
21. ---Must I go with them tomorrow? ---No, you ___.
A mustn’t B shouldn’t C needn’t D can’t
22 ---Sorry, but I have to look after my brother.
---That is too ___. Maybe ___ time.
A bad, another B bad, other C good, another D good , other
23 ---How about ___ out ___ a walk? --- Good idea!
A go, for B going , for C to go, for D goes, to
