【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
网考网参考答案:D
网考网解析:
[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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