1.Go/keep on a diet

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

2.Have a hard/difficult time with sth.

3.Have a temperature/fever

4.Have the final say:有决定权

5.Hold up:堵塞i，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?(2005-6)

6.In a good/terribly /mood

7.In the long run:长期来看

It seems very experience. But in the long run it will save the money on the maintenance.(1995-6)

8.Join in:参与

9.Keep between the two of us:/keep a secret

10.Keep fit