Experts are trying to work out a plan to deal with the problems caused by global warming ______ it is too late.
#31459
A
when
B
if
C
before
D
until
推荐题目
You can get the best result ______you carry out the experiment under the desired conditions.
#31006
A
what if
B
even if
C
only if
D
as if
My brother has his own business — that’s also ______ I expect to do after I graduate from Harvard University.
#31626
A
why
B
when
C
that
D
what
When people talk about the scenic spots in Anhui, the first _____ comes into mind is the Yellow mountain.
#34829
A
which
B
that
C
one
D
place
Russia won the host right of the 2018 World Cup England lost it on December 2.
#33531
A
before
B
or
C
while
D
even if