1.Her mother plays tennis after school
-> Tennis is played by her mother after school
2.Minh is painting the trees in the park
-> The trees are being painted in the park by Minh
3.She took us to HCM city in 2014
-> We were taken to HCM city by her in 2014
4.He will buy some vegetables tomorrow
-> Some vegetables will be bought by him tomorrow by him
5.You should meet the doctor 
-> The doctor should be met (by you)
6.She isn't reading books at this time
-> Books aren't being read by her at this time
7.He doesn't visit his parents every week
-> His parents aren't visited by him every week
8.he didn't give me any flowers
-> I wasn't given any flowers by him
9.Lan won't help me to do this work
-> I won't be helped to do this work by Lan
10.We haven't visited the zoo 
-> The zoo hasn't been visited (by us)                 
11.Does Nam speak English every day?
-> Is English spoken by Nam everyday?
12.Is Lan painting the house now?
-> Is the house being painted by Lan now?
13. Did you meet them 3 days ago?
-> Were they met 3 days ago (by you)?
14. Have they taken her to the theater yet?
-> Has she been taken to the theater yet?
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