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  • 科目:英语
  • 题型:单选题
  • 难度:较易
  • 人气:700

—Could you tell us _________ to do it?
—Of course. First of all, you should clean the wall, then clean the floor.

A.when B.what C.how D.whether
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—Couldyoutellustodoit?—Ofcours