2
1 by
2 by
3 with
4 by
5 with
# 3
1 He was killed by the gangsters yesterday
2 The dinner hasn't been made by her yet
3 A new stove shouldn't be bought by us
4 The flowers are watered by me everyday
5 An insured letter has been delivered by a postman
# 4
1 I will remember
2 were grown by
3 is produced
4 found
5 was discovered