WHAT ... YOU ... AT 8 A.M YESTERDAY

6. - DE VA DAP AN KHAO SAT DAU NAM TIENG ANH 7 8 9
Tiếng Anh DE VA DAP AN KHAO SAT DAU NAM TIENG ANH 7 8 9
6. What ... you ... at 8 a.m yesterday?A. are ... doing B. was ...doing C. did ... do D. were ...doing.