题目内容
The biggest problem for most plants, which ________ just get up and run away when threatened, is that animals like to eat them.
A. shan’t B. can’t C. needn’t D. mustn’t
B
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题目内容
The biggest problem for most plants, which ________ just get up and run away when threatened, is that animals like to eat them.
A. shan’t B. can’t C. needn’t D. mustn’t
B