1.1.4. Make the following sentences negative.

1.1.4. Сделай следующие предложения отрицательными.

1. You know the answer.
2. You don't know the answer.
3. You knew the answer.
4. You didn't know the answer.
5. He had breakfast at 7 a.m. last Monday.
6. He didn't have breakfast at 7 a.m. last Monday.
7. She likes cats.
8. She doesn't like cats.
9. All Russian schoolchildren wear a uniform.
10. All Russian schoolchildren don't wear a uniform.
11. Anna and Bob bought chocolate ice cream the day before.
12. Anna and Bob didn't buy chocolate ice cream the day before.