Scientists say it may be five or six years _______ it is possible to test this medicine on human patients.
#33536
A
since
B
after
C
before
D
when
推荐题目
One Friday, we were packing to leave for a weekend away ______my daughter heard cries for help.
#31674
A
after
B
while
C
since
D
when
It was during World War II, ____ he was in his early twenties, _____ he joined the British Army.
#33800
A
that; when
B
when; that
C
when; when
D
that; that
Reality is not the way you wish things to be, nor the way they appear to be, _________ the way they actually are.
#32565
A
as
B
or
C
but
D
and