Combine the sentences, using who

I . combine the sentences, using who ,  which,  that
1.  The street is very wide . it leads to my school
2. The boys are my cousins. They are playing in the garden
3.the people were very nice. We visited them two days ago
4.the pencil is mine . it is on the desk
5.the man is secretary . you saw him at the desk
6.the man is at the bus stop. He fixed our car
7.can you pick up the papers? They are lying on the floor
8.i don't like the man. He is going out with my sister .
9.i knowa shop. It sells really good meat 
10.i watched a movie last night . it was interesting
11 . yesterday i meet a man. He works with your brother 
12.the cat was so cute  .  i saw the cat at your house