问题
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
B: where
C: if
D: once
正确答案是：
同类题型
We should know that we can only reach the top if we are ready to ________ and learn from failure.[ ]
ing to police _____, Mr. and Mrs. Hunt were found dead on the floor of their kitchen.
Jennynearly missed the flight doingtoo much shopping.
The number of the books in our school library _______ about50,000.