----You seem to have known Dr Smith for a long time.---- That’s true. ______ he joined our club six years ago.
#32637
A
Since
B
Until
C
When
D
Before
推荐题目
_____ these experiments were successfully completed would we think of going into humans.
#31522
A
If only
B
So that
C
Only if
D
Even if
Animals suffered at the hands of Man ______ their homes were destroyed by people to make way for agricultural need to provide food for more people.
#32093
A
in which
B
for which
C
so that
D
in that
As tensions flared this week between China and Japan over the Diaoyu Islands in ________ East China Sea, ________ senior US State Department official said the United States wants cooler heads to prevail.
#31385
A
the; the
B
/; the
C
/; a
D
the; a
I wondered ______ they had raised so much money on their own to help youngsters in need.
#31208
A
what
B
that
C
how
D
why