WE MUST HAND IN THE EXERCISE _______ THREE O'CLOCK. A. BEFORE B. BE...

1. - 100 CAU TRAC NGHIEM ON THI ANH 8 100 CAU TRAC NGHIEM ON THI LOP 8 PHAN 1
100 CAU TRAC NGHIEM ON THI ANH 8 100 CAU TRAC NGHIEM ON THI LOP 8 PHAN 1

1. We must hand in the exercise _______ three o'clock.

A. before B. between C. on D. in