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
There seems to be little chance___ Jack will recover from his injury in time for the race.
#92747
A
what
B
which
C
that
D
if
Please do me a favor----_____ my friend Mr. Smith to Youth Theater at 7:30 tonight.
#92236
A
to invite
B
inviting
C
invite
D
invited
Finding her car stolen, _____.
#93600
A
a policeman was asked to help
B
the area was searched thoroughly
C
it was looked for everywhere
D
Mrs. Green reported it to the police
______ my camera wasn’t working; there is no battery in it.
#93562
A
No doubt
B
No wonder
C
No possibility
D
No way