Нужно перевести предлодения

Перевод:

1.What did you find on him yesterday?He allowed everyone to use his computer.

2.John said he can drop in around six.

3.Emma stumbled upon a very unusual account,looking trought the files of her assistant.

4.I do not think that I can take part in the conference.I get sick.

5.I had a button off my jacket as I climbed over the wall.

6.You should explain this word to the children.They have never met him.

7.From the old vest of my brother came off the button.

8.Betty caught a cold and fell ill.She had a fever.

9.Get off the grass .You can't walk on it.

10.I do not know what came over him,but he does not want to stop by for a moment.