Each time ___ we have done our homework, we will go over it.
#73527
A
which
B
during
C
where
D
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推荐题目
There are 104 elements found in nature, ___ are metals.
#71700
A
most of it
B
that
C
most of which
D
mostly
Living in the mountain area has its problems , _____ obtaining water is a big problem.
#67011
A
of which
B
for what
C
as
D
whose