Make the sentences passive: 1 tom wrote this letter yesterday. 2 a postman collects the mail twice a day 3 i'll buy the flowers tomorrow 4. she asks me every day 5 they paint pictures every day

1 This letter was written by Tom yesterday.
2 The mail is collected by a postman twice a day.
3 The flowers will be bought by me tomorrow 
4 I am asked by her every day
5 Pictures are painted by them every day.