Scientists say it may be five or six years _____ it is possible to test this medicine to human patients.
#92420
A
since
B
after
C
before
D
when
推荐题目
—Could you tell me_________?—He is in the library．
#93230
A
where Simon was
B
where is Simon
C
where was Simon
D
where Simon is
He said that only after he went abroad _______ what his motherland meant to him.
#93415
A
he realized
B
he had realized
C
had he realized
D
did he realize
is reported in the newspaper is that seventeen climbers have been killed in the snow storm
#93509
A
That
B
As
C
It
D
What
There was nothing they could do______.
#93165
A
but wait
B
except waiting
C
only to wait
D
unless they waited
Elworth’s barn burned down, but they saved what cattle _______ were in the barn.
#93482
A
that
B
they
C
there
D
where