WE ________ IN THE LIBRARY WHEN THE FIRE STARTED

câu 43. - 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 43.

We ________ in the library when the fire started.

A.

were studying

B.

are studying

C.

was studying

D.

studied