53.I ___________ (not) think so 55.Listen!Who _____________ (sing) in the classroom?

53.I ___________ (not) think so 55.Listen!Who _____________ (sing) in the classroom?
53.I ___________ (not) think so 55.Listen!Who _____________ (sing) in the classroom?

53.I ___________ (not) think so 55.Listen!Who _____________ (sing) in the classroom?
i don't think so.
listen!who is singing in the classroom
祝好!
如果不懂建议重新提问,也可以直接追问哦.

“俊狼猎英”团队为您解答。
53.don't
is singing
祝你进步

__Don't_________ (not) think so 55.Listen! Who ___is singing__________ (sing) in the classroom?