摘要： How dirty the windows are! They really require . A. to clean B. being cleaned C. to have cleaned D. cleaning
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How dirty the windows are! They really require _______.
A. to clean B. being cleaned C. to have cleaned D. cleaning
查看习题详情和答案>>How dirty the windows are! They really require _______.
|
A．to clean |
B．being cleaned |
C．to have cleaned |
D．cleaning |
查看习题详情和答案>>