问题
The tourists from Australia _______have hurried to the airport-the flight was called off becauseof the heavy fog. [ ]
A: mustn't
B: couldn't
C: needn't
D: wouldn't
B: couldn't
C: needn't
D: wouldn't
正确答案是：
同类题型
after I ______ to soil science, I sometimes wondered whether 1 was doing what I wanted to do.
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Could you please tell me —Yes. He came to study here just last month.