Scientists say it may be five or six years ______ it is possible to test this medicine on human patients.
#92459
A
before
B
after
C
since
D
when
推荐题目
The candidate was about to get in the car _ suddenly a man with a mask appeared and shot at him.
#92990
A
while
B
after
C
as
D
when
__________ no need for us to discuss the problem again. It has already been settled.
#94695
A
It has
B
There has
C
It is
D
There is
There were _____many people there _______I wasn’t able to pick her out.
#93446
A
such; that
B
very; that
C
such; who
D
so; that
When I offered to take Jane to the ancient town, she asked what _____ to see there
#94004
A
it was
B
there was
C
was
D
was it
Everyone in the village knew him, so we had _______ his house.
#94088
A
no difficulties to find
B
some difficulties in finding
C
no difficulty to find
D
no difficulty in finding