1.The gate was painted(by someone) last week.

2.My car will washed by Peter tomorrow

3.Have your shoes had repaired(by someone) yet?

4.The flowers are watered by mother every morning

5.Your computer must repaired (by someone) next week.

1. I had someone paint the gate last week.

=>The gate was painted(by someone) last week.

2. Someone will have Peter wash my car tomorrow.

=>My car will washed by Peter tomorrow

3. Have you had someone repair your shoes yet?

=>Have your shoes had repaired(by someone) yet?

4. My mother has the gardener water the flowers every morning.

=>The flowers are watered by mother every morning

5. You must have someone repair your computer next week.

=>Your computer must repaired (by someone) next week.