Change the active to the passive

giúp tớ ạ
----- Nội dung dịch tự động từ ảnh -----
PRACTICE
I. Change the active to the passive.
1. We have to raise money for charity.
Money
2. They had to cancel the trip because of the bad weather.
The trip _______________
3. People used to use oil lamps for light in the seventeenth century.
Oil lamps _______________
4. Nam needs to keep that bandage dry.
That bandage _______________
5. They had to encourage the students to wear uniforms.
The students _______________
6. Cuong began to feed their buffaloes two days ago.
Their buffaloes _______________
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