11.Be aware of:意识到

I like people who are going about their daily business without being aware of the camera(1997-1)

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.(1995-6)

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