摘要： He was riding to school he was hit by a car this morning. A. while B. when C. as D. so
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He was riding to school _______ he was hit by a car this morning.
A. while B. when C. as D. for
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He was riding to school ________ he was hit by a car this morning.
A. while
B. when
C. as
D. so
查看习题详情和答案>>