study is hard work, we’d better continue to the end.
#57655
A
Though
B
Unless
C
Because
D
If
推荐题目
—What’s the matter with you? You look so worried.-- I don’t know ___________ the problem.
#57173
A
what to solve
B
how to solve
C
to solve what
D
how can I
I can’t understand the story correctly _________ the new words in it.
#58154
A
because
B
because of
C
but
D
so