1. I haven't make a cake since last month
-> The last time I made a cake was last month
2. She hasn't help mom cook dinner for a few day
-> It is a few days since she last helped mom cook dinner
3. We haven't played chess for a week
-> It is a week since we last played chess
4. They haven't painted their house for six years
-> It's six years since they last painted their house
5. Peter hasn't jogged in the park since sunday
-> The last time Peter jogged in the park was on Sunday
6. My sister hasn't gone shopping since May
-> The last time my sister went shopping was in May
7. The children haven't played volleyball since yesterday
-> The last time The children played volleyball was yesterday
8. Mrs.Nguyen hasn't watched tv for six week
-> It is six weeks since Mrs.Nguyen last watched tv
9. Laura and Mary haven't gone to the cinema since last year
-> The last time Laura and Mary went to the cinema was last year
10. They haven't traveled by plane since 2015
-> The last time they traveled by plane was 2015
11. I haven't written a letter since I was a student
-> The last time I wrote a letter was when I was a student
12. He hasn't tided his room for two day
-> It's two days since he last tided his room