题干
—Are Mike and Jack having lunch at school now?
— .
A：No, they are
B：Yes, they do
C：No, they aren't
D：No, they don't
答案(点此获取答案解析）
C
—Are Mike and Jack having lunch at school now?
— .
A：No, they are
B：Yes, they do
C：No, they aren't
D：No, they don't
