题目内容
--- Look! Lots of people there. What’s wrong?
--- An old lady was going across the road ________ a car hit her.
A. while B. if C. whether D. when
D
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题目内容
--- Look! Lots of people there. What’s wrong?
--- An old lady was going across the road ________ a car hit her.
A. while B. if C. whether D. when
D