Turn into passive :
1 He usually buys the tickets.
2 We booked the flights.
3 He opened the bottle easily.
4 She cleans my shoes.
5 They arrested the burglers.
6 He wrote the note.
7 They wash the car.
8 She found the key.
9 He sold his coin collection.
10 We started a new system.
11 Someone stole his car.
12 They used the towels.
13 We turned on the TV.
14 She served tea at 4.
15 The rain flooded the camp.