Сделайте это предложение в отрицательной форме there is some butter on the plate

There is not some butter on the plate. there isn't some butter on the plate. 

1she couldn't walk because she twisted her ankle.  2 i got up, had breakfast and then started to do my homework.  3 where did you go last summer? - i went to the usa to visit my friends.  4 she didn't mean to hurt her friend.  5 my grandfather used to work a lot when he was only 15.  6 what she did, was just awful. i never expected her to behave like that. 7 the police arrested him, but then they let him go.  8 why were you so cruel with your sister?   9 he arrived at the office, signed the papers and then left for the meeting.  she never told me the whole truth no matter how persistantly i asked her. 

1)i accidentathey held a series of negotiations before signing the agreement .2)lly met her on the street, we have not seen since childhood .3)when the rain started we got to the house.3)he tried many different professions before becoming a famous writer.4)he tried many different professions before becoming a famous writer.  5. after they moved into the house they felt that something was wrong 6. when we entered the house there was nobody there , but we had a feeling that someone has been there