Obviously they didn’t see the significance of the plan. That’s __________the problem was.
#70559
A
why
B
where
C
that
D
how
推荐题目
This is the hotel _______last month. 
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A
which they stayed
B
at that they stayed
C
where they stayed at
D
where they stayed
You will be late for school ________you hurry up.
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A
if
B
since
C
when
D
Unless