Сделать отрицательные предложения 1) i can cook a cake. 2) she in an engineer. 3) they enjoy swimming. 4)they were at the sea last summer. 5) he has written a letter today. 6) they bought a present yesterday. 7) mother cleans the house every day. 8) ben will call you tomorrow. 9) we are playing now. 10) they danced at the party yesterday.
2) She isn't an engineer
3) They aren't enjoy swimming
4) They weren't at the sea last summer
5) He hasn't written a letter today
6) They didn't buy a present yesterday
7) Mother doesn't clean the house every day
8) Ben won't call you tomorrow
9) We aren't playing now
10) They didn't dance at the party yesterday