题干
—Can you work out this math problem?
—Yes. ______
A：It's a piece of cake.
B：Do please.
C：It's too hard.
D：Well done!
答案(点此获取答案解析）
A
—Can you work out this math problem?
—Yes. ______
A：It's a piece of cake.
B：Do please.
C：It's too hard.
D：Well done!
