2. 外语
  3. He found it necessary for us______from each other.

He found it necessary for us______from each other.

admin2013-05-04  29
问题 He found it necessary for us______from each other.
选项 A、to help and learn
B、helping and learning
C、to learn and to help
D、learning and helping
答案A
解析 本题考查it作形式宾语用法。it为found的形式宾语，而后面的不定式to help and learn from each other为found的真正宾语。
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