Ithasn'tbeenmadeclear

來源:國語幫 1.07W

問題詳情:

Ithasn'tbeenmadeclear

It hasn't been made clear ________ the new underground line is to be open to traffic.

【回答】

when 句意:新的地鐵線路何時開放還不清楚。由句意可知填when。這是when引導的主語從句,it是形式主語。

知識點:主語從句

題型:閲讀填空

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