题干
— How many boys are there in your class?
— .
A：Yes, there are
B：No, there aren't
C：There are 20
D：They are from the USA
答案(点此获取答案解析）
C
— How many boys are there in your class?
— .
A：Yes, there are
B：No, there aren't
C：There are 20
D：They are from the USA
