They kept trying _____ they must have known it was hopeless.
#34704
A
if
B
because
C
when
D
where
推荐题目
We’ve given her some advice, but I don’t know________ she’ll accept it．
#30103
A
what
B
where
C
whether
D
Which
I can’t remember how the tune goes, ______ I’ll recognize it when I hear it.
#30825
A
so
B
but
C
because
D
unless
I like Emy, ________ she can be annoying（烦人的）at times.
#33422
A
even though
B
now that
C
as though
D
as long as
How long do you think it will be ______ the Chinese people land on the moon?
#34769
A
that
B
since
C
until
D
before