1. We became good friends
2. The lesson began 10 minutes ago
3. He bit a piece of cake
4. A wind blew yesterday night
5. I broke the ceramic vase
6. They built a nice cottage
7. She burnt old letters
8. The boys played in the yard
9. Mum cooked many tasty things
10.1 finished this work
1. We did not become good friends.
2. The lesson did not begin 10 minutes ago.
3. He did not bite a piece of cake.
4. A wind did not blow yesterday night.
5. I did not break the ceramic vase.
6. They did not build a nice cottage.
7. She did not burn old letters.
8. The boys did not play in the yard.
9. Mum did not cook many tasty things.
10. I did not finish this work.