精英家教網 > 高中英語 > 題目詳情
  -- _____is that used for?
---_____ the floor.
A.Why; To cleaningB.What; CleaningC.Why; To cleanD.What; clean
B
句意“這是用來干什么的?”“掃地!彼缘谝粋空選what。第二空應該做介詞for的賓語,所以使用cleaning。答案B。
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