He found it necessary for us ______ from each other.

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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 help
D、learning and helping

答案A

解析句意：他觉得我们彼此相互帮助和学习很有必要。find it necessary for sb．to do sth．的意思是“发现某人必须做某事”。

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公共英语二级笔试

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