Change the following sentences into passive voice
1, my mother made these dresses
2,his parents made him study for his next exams
3, they have just introduced a new style of jeans in he USA
4, the police have just released Frederic
5, they grow rice in tropical countries
6, you should take two tablets every four hours
7, my sister gave me a new pair of shoes on my fifteenth birthday
8, the workers are building a supermarket on out street
9, the zoo keepers feed the animals twice a day
10, they have sold their hotel to pay their debt
11, we are going to grow flowers in the front garden
12, you mustn't use this machine after 5.30 p.m
13, my grandmother is knitting a new sweater for me
14, did people make jeans two hundred years ago?
15, we don't use this kind of cloth to make shirts
16, Vietnamese woman continue to wear the unique and fashionable ao dai
17, this old man always helps the poor children
18, we haven't met Jane since we left for the city
19, we call this dog Kiki
20, you should open the wine about three hours before you use it
21my friend, John, can answer these English questions
22, Mrs. Green is watering the flowers in the garden now
23, he bought a new mobile phone two weeks ago
24, you will know the result of the graduation examination in a week
25, she was cooking dinner when we dropped in to see her
