Нужна вставить артикль! i'd like glass on water he's son i can she can't

i'd like a glass of water. he's the eldest son in the family. i can play chess. she can't play the piano.

1) when were you born? i was born in 1980 .                                                        2)the light went off and the orchestra started playing.                                       3)when i came into the kitchen mother was cooking dinner.                               4)we were washing the floor from 3 till 4 yersterday.                                         5)at 7 yersterday i played the piano.                                                                 6) when i came home mother had already cooked dinner.                                   7)tom had translated the text by 7.                                                                   8)she  was seeing the film for 1 hour when i rang her up.                                     9)where  were you yesterday?                                                                             10)did you finish school last year?

this summer i was in the camp. i was there for 3 weeks. there were many interesting things in the camp. every morning we did exercises. then we had our breakfast. after it we cleaned our rooms and territory of our camp. then we went to the sea. when we returned to the camp we had dinner. after it we slept for 2 hours. then we went to different   sections. in the evening we had supper and went to the disco. at 10 o'clock we went to sleep.