My uncle __travelled___ (travel) to America last year.
Don't ___fighten__ (frighten) him .He is only a child.
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Who _____ (put) the basket behind the door?I did.
因为是did说明是过去式,所以用put,对
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Nobody _____ (be) in the park at that time.
nobody是pron,不可以用are,at that time是过去时间,用was 对
What __did___ you __find___ (find) in the room?A cat.