( ) How many are there in the building? A、classrooms B、classroom C、a classroom
_____ people invented paper.A. English B. Chinese C. American
Daming _____ his trousers yesterday.A. washes B. washing C. washed
Yesterday I _____ my bedroom.A. clean B. cleaned C. cleans
选择并改错，把错误的一项圈起来，在句子后来改正。
根据问句找答句。
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