UNIT 2

câu 11. - BO TRAC NGHIEM ON TAP ANH VAN CO BAN AMERICAN ENGLISH FILE 2
BO TRAC NGHIEM ON TAP ANH VAN CO BAN AMERICAN ENGLISH FILE 2

Câu 11.

What ________ at 7:30 last night?

A.

are you doing

B.

you did

C.

were you doing

D.

did you do