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题目内容
（中国石油大学-《大学英语4》）
)
I fell and hurt myself while I ______ basketball yesterday.
A)
was playing
B)
am playing
C)
play
D)
played
I fell and hurt myself while I ______ basketball yesterday.
A)
was playing
B)
am playing
C)
play
D)
played
参考答案