大学英语：重点词汇：Go sightseeing

　　10. Go sightseeing

　　11. Go/keep on a diet

　　I’m on a diet recently, so I’d better skip the dessert.

　　12. Have a hard/difficult time with sth.

　　13. Have a temperature/fever

　　14. Have the final say:有决定权

　　15. Hold up 堵塞，持枪拦截，举起，拦截

　　Did you hear that the convenience store next to the gas station was held up last night?

　　16. In a good/terribly /mood

　　17. In the long run:长期来看