Scientists say it may be five or six years _______ it is possible to test this medicine on human patients.
#33536
A
since
B
after
C
before
D
when
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Some scientists say that the tomato is technically a fruit，＿＿it is eaten as a vegetable．
#30700
A
although
B
because
C
as if
D
as long as
---- Our holiday cost a lot of money.---- Did it ? Well, that doesn’t matter_______ you enjoyed yourself.
#31062
A
as long as
B
unless
C
as soon as
D
though
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