试题与答案

The living room is clean and tidy, with

题型:选择题

题目:

The living room is clean and tidy, with a dining table already _____ for a meal to be cooked. [ ]

A. laid

B. laying

C. to lay

D. being laid

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C解析:降低空气中毒物浓度是预防职业中毒的中心环节。

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