[题目]I am concerned it that I can't concentrate my work because of headache.A. of; on B. of; ofC. about; on D. about; to 题目和参考答案——青夏教育精英家教网—

题目内容

【题目】I am concerned __________ it that I can't concentrate __________ my work because of headache.

A. of; on B. of; of

C. about; on D. about; to

【答案】C

【解析】句意：我担心由于头疼而不能集中精力于我的工作。 be concerned about 担心；concentrate on 集中精力于。

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When the last dish is finished, the banquet has officially ended. There is little ceremony involved with its conclusion. The host may ask if you have eaten your fill. Then the principal host will rise, signaling that the banquet has ended. Generally, the principal host will bid good evening to everyone at the door and stay behind to settle the bill with the restaurateur. Other hosts usually accompany guests to their vehicles and remain outside waving until the cars have left the premises.

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删除：把多余的词用斜线(＼)划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1．每处错误及其修改均仅限一词；

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