题目内容
(请给出正确答案)
[单选题]
_______ in the street, his glass fell on the ground
A.When walking
B.When walked
C.When he was walking
D.He was walking
答案
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A.When walking
B.When walked
C.When he was walking
D.He was walking
第2题
A.that
B.which
C.why
D.when