IF YOU ARE A STUDENT, YOU CAN GET A DISCOUNT………BOOKS.A. ON B. IN C...

19. - BAI TAP TRAC NGHIEM ANH 9 PPT
BAI TAP TRAC NGHIEM ANH 9 PPT

19. If you are a student, you can get a discount………books.

a. on

b. in

c. at

d. for

a. on