问题
选择题
—Look, the paint is starting to come off ____ the wall is damp.
—Well, we'd better have the wall repainted some day.[ ]
A. when
B. where
C. if
D. once
答案
答案：B
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—Look, the paint is starting to come off ____ the wall is damp.
—Well, we'd better have the wall repainted some day.[ ]
A. when
B. where
C. if
D. once
答案：B
