---Mum, ____ I go out to play with my friends now?---Sure, but you ___ clean up your bedroom first.

A. can; need B. may; must C. must; need D. need; must

B 【解析】句意：—媽媽，我現(xiàn)在可以和朋友出去玩了嗎？當然可以，但是你必須先打掃你的臥室。can能夠，可以；need需要；must必須。結合句意可知，答案為B。
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