Make negative sentences.
1) It snows in August
2 I wrote this exercise two days ago
3 We have been to the Zoo this week
4 They will buy a new car next year
5 my sister is watching TV now

1) It doesn't snow in August2) I didn't write this exercise two days ago3) We haven't been to the Zoo this week4) They won't buy a new car next year5) My sister isn't watching Tv now  

It does not snow in August.I did not write this exercise two days ago.We have not been to the Zoo this week.They won't buy a new car next year.Me sister is not watching TV now.