The problem is _______ we can arrive there before 6:00 tomorrow morning.
#34328
A
which
B
whether
C
when
D
that
推荐题目
Our manager never fails to answer a phone call ______ she is very busy.
#30895
A
since
B
once
C
even if
D
so that
I was reading attentively in my own room ________ suddenly he knocked at the door.
#33711
A
when
B
while
C
then
D
as
When the elevator doors open, stand aside and let everyone out ________ you try to get in.
#31237
A
unless
B
although
C
until
D
before
_____ the majority of people you will meet when travelling are sure to be friendly, there are dangers-theft being the most common.
#30875
A
Since
B
Unless
C
While
D
Once