13. — Thank you for showing me how to travel online.

　　— ________.

　　A. No problem

　　B. Of course not

　　C. It doesn't matter

　　D. My pleasure

　　【答案】D

　　【解析】本题考查交际用语。No problem意为“没问题”；Of course not意为“当然不”；It doesn't matter意为“没关系”；My pleasure意为“我的荣幸”。当对方表示感谢时，常用“My pleasure”作为回应。故选D。句意：— 谢谢你教我如何线上旅行。— 荣幸至极。

　　14. — Sandy, do you still remember ________ the Palace Museum?

　　— Yes. About five years ago.

　　A. when we visit

　　B. when do we visit

　　C. when we visited

　　D. when did we visit

　　【答案】C

　　【解析】本题考查宾语从句的语序。宾语从句语序为陈述句语序，且由答句可知该处动作发生于过去。故选C。句意：— 桑迪，你还记得我们什么时候参观了故宫博物院吗？— 记得。大约五年前。

　　15. Just as the saying goes, "________." If you keep practising speaking English, you'll be better at it.

　　A. Practice makes perfect

　　B. Burn the candle at both ends

　　C. It never rains but it pours

　　D. Many hands make light work

　　【答案】A

　　【解析】本题考查习语。Practice makes perfect意为“熟能生巧”；Burn the candle at both ends意为“劳累过度”；It never rains but it pours意为“祸不单行”；Many hands make light work意为“人多力量大”。根据后半句“If you keep practising speaking English, you'll be better at it.”可推知此处表“熟能生巧”。故选A。句意：常言道：“熟能生巧”。假如你坚持练习英语口语，你会说得更好的。