题干
—Who can tell us how to work out the problem?
—_______. It's too difficult.
A：No one
B：Someone
C：None
D：Any one
答案(点此获取答案解析）
A
—Who can tell us how to work out the problem?
—_______. It's too difficult.
A：No one
B：Someone
C：None
D：Any one
