Question

Đặt câu ( - ) và câu ( ? ) ( + ) At 9 o' clock tomorrow they will be cleaning their house

Answer 1

At 9 o' clock tomorrow they will not be cleaning their house

Will they be cleaning their house at 9 o' clock tomorrow?

Answer 2

Đây nè bạn, chúc bạn học tốt :))
( + ) Là câu đề bài cho đó :))
( - )  At 9 o' clock tomorrow they won't be cleaning their house.
( ? ) What will they do at 9 o' clock tomorrow?