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If you don't have much time,you ( )have a pet这里是个选择题,是选shouldn't,还是mustn't?为什么?

题目详情
If you don't have much time,you ( )have a pet
这里是个选择题,是选shouldn't,还是mustn't?为什么?
▼优质解答
答案和解析
shouldn't
不应当