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1.He was away from home for two years and we areconcerned (担心的) about his safety.

分析 他离家两年了,我们很担心他的安全.

解答 concerned 考查固定短语.根据句意:他离家两年了,我们很担心他的安全.be concerned about是英语的固定搭配"担心,挂念".

点评 英语中的固定短语,既不能添词,也不能少词,是固定的,要求同学们在平时记忆准确,然后根据句意找出记忆中的固定搭配,做出正确的答案.

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