High school ______ covers a lot, including Chinese, Math, Geography and so on.
Old people must be____ politely
That day I saw some parents____at the back of the classroom,___to the teacher .
There are___new words that all of us can understand
---What are you busy____these days? ----Nothig much
“You didn’t go to the movie with them, did you?” “___________Because I was very busy”