问题
选择题
— What ______ John ______ this time yesterday?
— He was playing basketball. [ ]
A. is; doing
B. was; doing
C. are; doing
D. did; do
答案
答案：B
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— What ______ John ______ this time yesterday?
— He was playing basketball. [ ]
A. is; doing
B. was; doing
C. are; doing
D. did; do
答案：B