1. The reverse is also true 反之亦然
2. Tie up with/busy with
3. Tired of/get bored of
4. Under the weather 身体不舒服
5. Well-off/rich people
6. White elephant 无价值的东西，废物
7. White lie 善意的谎言
8. You bet 当然
9. Back up 支持，援助。
10. Beat the crowd 避开人群，避开高峰
The only to beat the crowds when you do the grocery shopping on Sunday is to be here when they open at 9 sharp.
11. Be aware of 意识到
I like people who are going about their daily business without being aware of the camera.
12. Behind the schedule/late
13. Be in charge of 负责，照顾，经管 be responsible for
14. Be in the charge of 下级+be in the charge of+上级
15. Be in season 应季的，当令的
These apples and pears seem to be in season.
16. Be supposed to do 应该，被期望
What am I supposed to do with his help?
17. Book up
Break down/doesn’t work
18. Bring up 教育，培养，提出
She brought up her children to be truthful.
19. Build up 积累，增强，树立
20. By chance/run into 偶然
21. By no means 绝不 /anything but
22. Check in/out
23. Come up 发生，出现，提出
24. Come up with 针对问题，挑战等提出，想出，赶上
I spent a whole week searching on the net, but came up with nothing valuable.
25. Concentrate on/focus on 集中
26. Deal with /cope with 处理
27. Drop in 顺便拜访
28. Drop out of 不参与，退出
They’re likely to drop out of school and less likely to succeed in life.
29. Eat one’s words 食言
30. Fall short of 达不到，不符合
Its results fell short of her expectation.