It is compulsory for all the students to finish th...

Câu hỏi: It is compulsory for all the students to finish their class work before going home.

A. All the students needn't finish their class work before going home

B. All the students must finish their class work before going home.

C. All the students may finish their class work before going home

D. All the students can't finish their class work before going home