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

Câu hỏi

I the accident while I for the bus.

A. was seeing - waited

B. saw - was waiting

C. was seeing – was waiting

D. saw – waited

Đáp án
B. saw - was waiting

Câu hỏi thuộc Bài tập:

I ____ the accident while I ____ for the bus.