Scientists say it will be five or six years __________ it is possible to test this medicine on humans.
#30743
A
after
B
before
C
since
D
when
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__________ the term has come to an end, I’m going to rest for a few days and then take a trip.
#30794
A
Now that
B
Even if
C
As though
D
So that
He was told that it would be at least three more months______he could recover and return to work.
#79795
A
when
B
before
C
since
D
that
. My father likes outdoor activities,_______ my mother prefers staying at home.
#34265
A
when
B
while
C
after
D
before
I ________ with Hanmeimei on the phone _______ the light went out.
#30908
A
am talking; while
B
was talking; when
C
talked; when
D
was talking; while