Scientists say it may be five or six years_______it is possible to test this medicine on human patients.
#92600
A
when
B
after
C
before
D
since
推荐题目
--- Tommy, your mum has been out without glasses! --- Well, take it easy. _______ she is back home for them.
#92512
A
It is long before that
B
It won’t be long since
C
It won’t be long before
D
It will be long before
Researchers have found clear and convincing evidence ________ happiness isthe key to better health and longer lives.
#92775
A
where
B
whether
C
how
D
that
Mike has much difficulty ________ Chinese so he often asks me ________ help.
#92686
A
to understand, with
B
understanding, of
C
to understand, for
D
understanding, for
Not having worked out the program, ________ leave the office.
#93247
A
so he was forbidden to
B
and he didn’t want to
C
his little son couldn’t make him
D
be couldn’t free himself to
He called another girl, ______ was more suitable for the position.
#93796
A
he believed
B
who he believed
C
he believed she
D
whom he believed