With out the help of people from every corner of the country, people in Wenchuan County, ____ recovered very quickly from the May Twelfth Earthquake.（ ）
- A.must not have
- B.couldn't have
- C.may not have
- D.can't have
正确答案及解析
正确答案
B
解析
本题考查虚拟语气。题干的意思是“如果没有全国人民的援助，汶川的人们不可能很快从5.12大地震中恢复过来”，couldn't have done意思是“不可能做某事”。
