We are trying our best ______ the poor children who lost their parents.

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问题 We are trying our best ______ the poor children who lost their parents.

选项 A、helping
B、to help
C、helps
D、help

答案B

解析本题考查固定短语的用法。try one’s best to do sth．尽力做某事。

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公共英语二级笔试

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