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/doesnt 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