Which do you prefer to use, QQ______E-mail?
#55996
A
and
B
but
C
or
D
so
推荐题目
You shouldn’t keep a pet _______________ you have enough time to care for it.
#56035
A
if
B
unless
C
though
D
when
---Sorry, I’m late for class again.---Is it ______ you stayed up last night?
#56457
A
why
B
how
C
because
D
when
---Could you please give the dictionary to Wang Feng?---Yes, of course! I’ll give it to him ________ he comes back.
#56618
A
since
B
before
C
as soon as
D
until