用所给单词或短语的适当形式填空。每单词或短语限用一次。
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【小题1】They ________ their teachers this weekend.
【小题2】Please be quiet. These students________ questions in groups.
【小题3】No one ________ them，so they had to do it by themselves.
【小题4】Peter is going to be a scientist when he ________.
【小题5】His family ________ to Shanghai last year.