MANY SCIENCES.WHILE MY MOTHER _________ A FILM ON TV, MY FATHER...

Câu 54.

many sciences.

While my mother _________ a film on TV, my father

C. Lasers are the great use, and many sciences, especially

was cooking dinner. It was

medicine.

March 8th yesterday.

D. Lasers are of great use in many sciences, especially in

A. watched

B. was watching