-- Hi, Samantha! When did you arrive in Leeds?
--- Last week, I a different culture since then.
A. was experiencing
B. will be experiencing
C. have been experiencing
D. had been experiencing
网友回答
A. was experiencing
B. will be experiencing
(答案→)C. have been experiencing
D. had been experiencing
解析：句意：嗨，Samantha，你什么时间到达的利兹市？--上周，自从那时我在经历一个不同的文化。因为since自从，它与完成时连用。现在完成进行时表示从过去开始一直持续到现在，并且还有可能继续持续下去，故选C。