This is a revision paper. When you do it, you would better make a mark_______ you have questions.( )
A.where
B.the place
C.as if
D.since
正确答案是A
This is a revision paper. When you do it, you would better make a mark_______ you have questions.( )
A.where
B.the place
C.as if
D.since
正确答案是A