1)the girl is happy because she won the race
2)i am using the sentence because it contains an adjective clause
3)the house belongs to Mr.pike because it was built on the river bank
4)my uncle is the mechanic because he is repairing my bike
5)the woman is talking to us is very kind
6)the river is polluted so the river is not safe for swimming
7)that is the book i bought yesterday
8)Are you waiting for the man
9)i work in the office is on 22nd floor
10)the meeting was interesting so i went to it
11)try to read the book i gave you yesterday
12)the people and cattle raised a cloud of dust when went to the market
13)paris is the finest city he had ever seen.
14)the window of my house is broken
15)mr pike was the last man the left
16)you took my sister picture
17)he showed me the engine of the car is good
18)he is the first pupil came this morning
19)hung threw a stone to your cat this morning
20)children like him because he tame tiger