Question

—What was the teacher doing at that time?
—He        lessons at school.

A．gives

B．gave

C．was giving

D．is giving

Answer 1

C

根據(jù)語境可知此題考查過去進行時的基本構(gòu)成，was或were doing sth表示過去某個時間正在做某事。因he是第三人稱單數(shù)故選C。