bài tập giới từ chỉ thời gian
in,at,on,between,up...to,from...to,till,during,before,after,over,under,while,for,of
11,I'II see you next week
12,he was born 1991
13,did you see her today
14,It starts tomorrow
15,It was sunny my birthday
16,It will be ready eight months
17,What's on the TV midnight
18,the factory closed june
19, the winter , it usually snows
20, friday,she spoke to me