问题
选择题
-What were you doing when I called you at 8 o'clock yesterday?
-I _________ the violin at that time.[ ]
A. play
B. is playing
C. played
D. was playing
答案
答案:D
-What were you doing when I called you at 8 o'clock yesterday?
-I _________ the violin at that time.[ ]
A. play
B. is playing
C. played
D. was playing
答案:D