Chia động từ trong các câu dưới đây

1. he is very thirsty.He(dot drink)       since this morning
2. they (study)         at this school for 7 years now
3.they(begin)         to study at this school 7 years ago
4. after they (go)        , I (sit)     down and (rest)    
5. they (go)        home after they (finish)       their study.
6. mary (meet )        her parents two week ago.
7. she (be)    born in 1992
8.we (never watch )       that tv programme
10. he (read)      that novel mary tmes before
11. they (live)     in this street for a long time 
12. after the guests (leave )         ,she (go)         back into the living-room and (switch)     off the light
13. on arrival at home I ( find)        that she (just leave )        just a few minutes before 
14. before he (go)       to bad , he (do)        this homework 
trả lời giúp mình zới mn ơiii