I ________ MY HOMEWORK AT 7 P.M YESTERDAY. A. WAS DOING B. DID C....

22) - DE KIEM TRA HKI 20112012
Tiếng Anh DE KIEM TRA HKI 20112012

22) I ________ my homework at 7 p.m yesterday.

A. was doing B. did

C. doing

D. had done