26. Students have to wear uniform at school.

→ Uniform have to be worn by students.

27.She has to pick fruit very early in the morning.

→ Fruit has to be picked very early in the morning.

28.She is taking care of the baby girl.

→ The baby girl is being taken care by her.

29.She was wearing her new T-shirt when I met her yesterday. 

→ Her new T-shirt was being worn by her when I met her yesterday.

30.He used to borrow my pen 

→ My pen used to be borrowed by him.

31.I had my nephew paint the gate last week. 

→ I had the gate painted by my nephew last week.

32..John gets his sister to clean his shirt.

→ John gets his shirt cleaned by his sister.

33.He had a mechanic repair his car. 

→ He had his car repaired by a mechanic.

34.They had the police arrest the shoplifter. 

→ They had shoplifter arrested by the police.

35.The Greens had a carpet cleaner clean their carpet. 

→ The Greens had their carpet cleaned by a carpet cleaner.

Công thức trong bài: 1. S + V + O → O + tobe + V3 by S

2. S1 + have/get + S2 +(to) V + O → S1 + have + O + V3 by S2

3. S + tobe + Ving + O → O + tobe + being V3 by S