Scientists say it may be five or six years _____ it is possible to test this medicine on human patients.
#67597
A
since
B
after
C
before
D
when
推荐题目
Was it through Mary, ________ was working at a high school, ________ you got to know Tom?
#66816
A
who; who
B
that; which
C
who; that
D
who; which
_______ there were only five soldiers left at the front,______ they went on fighting.
#41378
A
Because;so
B
If;and
C
Though;but
D
Though;/
– I don’t know when ________ the day after tomorrow_ I’ll call you when ______.
#41218
A
he will come; he comes
B
will he come; he comes
C
he will come; he will come
D
he comes ; he comes
(2013·北京，30)I took my driving license with me on holiday，________I wanted to hire a car.
#67446
A
in case
B
even if
C
ever since
D
if only