问题补充:
--- did it the conductor to check the tickets this morning?
--- Half an hour.
A. How soon; take
B. How long; cost
C. How often; spent
D. How long; take
答案:
A. How soon; take
B. How long; cost
C. How often; spent
(答案→)D. How long; take
解析:考查情景交际。“今天早上那个售票员用了多久检完了票?”“半小时。”How soon“多久之后”用于将来时;How often对频率提问;How long对时间长短进行提问。花费时间用take,花费钱用cost,spend的主语是人。故选D。