Поменяйте буквы, чтобы получить слово:
1. adeupgr
2. cingconferen deovi
3. letede

1. upgrade

2. conferencing video

3. delete

a - have been

b - have not had. saw 

a - was

b - left. came. have found/ 

1)  i used to live in the country, but now i don't

2)  did you use to wear glasses?

3)  they didn't use to do any homework.

4)  he used to have a motorbike

5)  we used to play in the park when we were little.

6)  she used  to cry  a lot when she was a baby