Scientists say it will be five or six years _____ it is possible to test this medicine on human patients.
#68451
A
before
B
that
C
since
D
when
推荐题目
There is no doubt, in my opinion,_______ matters is not the speed, but the quality of the product.
#72629
A
what what
B
that that
C
that if
D
that what
That was really a splendid evening. It's years ______I enjoyed myself so much.
#72529
A
when
B
that
C
before
D
since
Hurry up! The train ______. You know it ______ at 8:30 am.
#69465
A
leaves; leaves
B
is leaving; leaves
C
leaves; is leaving
D
is leaving; is leaving
The teacher found ____ difficult to decide ____ he would take with him to attend the conference.
#73130
A
it; whom
B
himself; who
C
this; whom
D
that; who