题目内容
The buses, most of _________ were already full, were surrounded by an angry crowd.
| A.that | B.it | C.them | D.which |
D
most of which were already full 为非限制性定语从句,修饰 the buses。类似地,以下各题也选D
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| A.that | B.it | C.them | D.which |