问题
选择题
—What _____ you _____ at nine o'clock last night, Michael?
—I was watching TV.[ ]
A. was; doing
B. were; doing
C. is; doing
D. did; do
答案
答案：B
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—What _____ you _____ at nine o'clock last night, Michael?
—I was watching TV.[ ]
A. was; doing
B. were; doing
C. is; doing
D. did; do
答案：B