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
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
B