There _____ a lot of coal mines in the south, but many of them have been closed or are _____ be clos

题目简介

There _____ a lot of coal mines in the south, but many of them have been closed or are _____ be clos

题目详情

There _____ a lot of coal mines in the south, but many of them have been closed or are _____ be closed.
A.use to having; about to B.used to be; to
C.use to having; going to D.used to be; supposed to
题型:单选题难度:偏易来源:不详

答案

B

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