-----How long do you think it will be _____man can finally solve the problem of cancer?------Well．it depends．
#30201
A
when
B
until
C
after
D
before
推荐题目
The police got to an old school _______the farmers used as a store.
#32026
A
that
B
what
C
where
D
when
_____ the government recovers the vehicle purchase tax and the oil prices go up continuously, the sales of the vehicle in China are still increasing every year.
#31216
A
When
B
Once
C
Since
D
While
The woman was about to open the door _______ she heard a strange sound from inside.
#32259
A
as
B
while
C
when
D
then
It was in the primary school ______ he studied ______ he knew how to be an honest person.
#33912
A
where, that
B
where, which
C
that, which
D
which, that