Usually pilots need about a decade of experience _______ they can be promoted to captain.
#31003
A
after
B
before
C
then
D
when
推荐题目
________I’m concerned, we are going to take an exam in a month.
#31162
A
As long as
B
As far as
C
Just as
D
Even if
The old man was so angry and spoke so fast that none of his children understood ____ he said meant.
#33699
A
that, that
B
what. what
C
what
D
that
(2014·日照模拟)What I value most for a holiday is________I relax myself after the heavy work.
#30051
A
that
B
how
C
when
D
what
Although he knew little about the large amount of work done in the field , he succeeded ____other more well-informed experimenters failed.
#80107
A
as
B
unless
C
what
D
where
Mr. Hopkins has not yet answered my question ______ I can go with him to______he calls the Underground Treasure House next week.
#34110
A
that; which
B
that; where
C
whether; that
D
whether; what