单选题
The rooms were then empty and most of them have been shut up.
A. empty B. most C. them D. have been
A
B
C
D
【正确答案】
D
【答案解析】
[解析] 应改为were。由and连接的两个并列句时态应一致。句子的意思是：“当时房间是空的，而且大多数房间都是关着的。”
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