— Thank God you’re safe!
— I stepped back, just to avoid the racing car.
A. in time
B. in case
C. in need
D. in vain
网友回答
(答案→)A. in time
B. in case
C. in need
D. in vain
解析：考查介词短语。句意：“—谢天谢地你还安全。—我后退了几步，刚好及时避开了那辆赛车。”in time“及时”；in case“万一，以防”；in need“需要”；in vain“徒劳，白费”。