题目内容
—The poor people lived near the highway.
—_____ very noisy.
A. It must have been B. They must be C. That might be D. There must be
【答案】
A
根据句子的时态应该是过去时,因此排除B、D,再根据代词的用法,it可以用来指代环境,而that不行,因此选A。
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