问题详情:
—Did you hear anybody knock at the door? —No. I ______ to my MP3.
A. have listened B. listened C. was listening D. listen
【回答】
C
知识点:动词时态
题型:选择题
问题详情:
—Did you hear anybody knock at the door? —No. I ______ to my MP3.
A. have listened B. listened C. was listening D. listen
【回答】
C
知识点:动词时态
题型:选择题