题目内容
根据所给提示，完成句型转换。每空一词，（含缩略词）。
1．She used to work very late last night．（改为否定句）
She to work very late last night．
2．I'll fly．to Mexico if I have time．（改为虚拟语气的句子）
I fly to Mexico if I time．
3．Parents should allow children to choose their own clothes．（变被动语态）
Children should to choose their own clothes．
4．I think this dictionary must be Tom's．（同义句）
I think this dictionary must Tom．
5．He likes singers．They can write their own music．（合并为含有定语从句的复合句）
He likes can write their own music．
1．didn't use 2．would，had 3．be allowed 4．belong to 5．singers who
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