Studies show that people are more _______ to suffer from back problems if they always sit before computer screens for a long time.

I was glad to meet Jerry again, ________ I couldn’t wait to spend all day with her

About _______ of the students in our school were born in the________.

you that you shouldn’t waste your timeplaying the computer games,_____________

Must I return the book this week— No， you ______ . You can keep it for 20 days.