问题
选择题
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
答案
答案：B
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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
答案：B