I________ MY HOMEWORK AT 7 P.M YESTERDAY. A. DID B. WAS DOING C. H...

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

30) I________ my homework at 7 p.m yesterday.

A. did

B. was doing C. had done

D. doing