Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions

Câu hỏi

While some volunteers the disabled children, others some furniture in the orphanage.

A. were teaching - were repairing

B. taught - repaired

C. were teaching – repaired

D. taught - were repairing

Đáp án
A. were teaching - were repairing

Câu hỏi thuộc Bài tập:

While some volunteers ____ the disabled children, others ____ some furniture in the orphanage.