________ is often the case, we have worked out the production plan.
#73180
A
Which
B
When
C
What
D
As
推荐题目
There were dirty marks on her trousers _______ she had wiped her hands.
#72892
A
where
B
which
C
when
D
that
You should be more confident in______ situation is challenging you.
#67640
A
wherever
B
whenever
C
however
D
whatever
The old couple, ____had been admitted to university, were living a hard life．
#70118
A
both their children
B
both of whom children
C
both of whose children
D
whose their children