问题描述：
关于时态的单选Ted____while he____his bicycle and hurt himself
Ted____while he____his bicycle and hurt himself
A.had fallen;was riding
B.had fallen;rode
C.fell;were riding
D.fell;was riding
注明一下理由,
Ted____while he____his bicycle and hurt himself
A.had fallen;was riding
B.had fallen;rode
C.fell;were riding
D.fell;was riding
注明一下理由,
问题解答：
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