Dùng đại từ quan hệ để viết lại các câu sau

Dùng đại từ quan hệ để viết lại các câu sau 1.He gave me the tickets.
He bought them yesterday
->
2.That colorful poster attracts young pupils.They have just left their school
->
3.The dog is a big one.The dog is playing with the ball
->
4.She is riding on the elephant.It was carried from India
->
5.The acrobat is his uncle.We saw him on TV last night
->
6.She wear the uniform.It was made last week
->
7.They tell her about the film.They saw it on TV last night
->
8.The woman was a tiger-tamer.You met her at the gate
->
9.The letter is from London.Our sister is reading it
->
10.The chair is broken on pieces.Her father used to sit on it
->