问题
选择题
— What happened to Bill?
— He _____ really fast when suddenly he ran headfirst into a parked car. [ ]
A. had run
B. was running
C. has run
D. has been running
答案
答案：B
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— What happened to Bill?
— He _____ really fast when suddenly he ran headfirst into a parked car. [ ]
A. had run
B. was running
C. has run
D. has been running
答案：B