How time flies! It’s almost three years _______ we met last time.
#57893
A
when
B
before
C
while
D
since
推荐题目
In summer milk will quickly go bad_____ it is put into a fridge.
#55322
A
though
B
unless
C
because
D
once
A cat, ______ it is a white one ______ a black one, is considered to be a good cat as long as it can catch mice.
#55577
A
both; and
B
not only; but also
C
either; or
D
whether; or