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

Câu hỏi

When the robbery , the safeguard !

A. happened - slept

B. was happening - was sleeping

C. was happening - slept

D. happened - was sleeping

Đáp án
D. happened - was sleeping

Câu hỏi thuộc Bài tập:

When the robbery ____, the safeguard ____!