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高普考/三四等/高員級◆英文題庫下載題庫

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44. The research is so designed that once ______ nothing can be done to change it.
(A) begins
(B) having begun
(C) beginning
(D) begun

答案：登入後觀看
難度： 困難
1F
Amy 研一上 (2017/07/20)

...that once it is begun-> ...that once begun


begin不能用has begun


44.The research is so designed that once..-阿摩線上測驗