We/ought/ submit/assignment/ tomorrow.
A. We ought submit our assignment tomorrow.
B. We ought to submit our assignment tomorrow.
C. We ought to have submitted our assignment tomorrow.
D. We ought have submitted our assignment tomorrow.
Đáp án đúng: B
Dịch: Chúng tớ cần phải nộp bài tập về nhà vào ngày mai.
We should move the furniture to higher places because of the flood.
Tom lives in the area affected by air pollution, so he has a breathing problem.