Respuestas
While: 1/ I do your homework while you chat.
2/ Yesterday, I worked while you slept.
3/ While you were listening to music, I was doing my homework.
4/ I was reading a book while my mum was cooking dinner.
5/ I was shopping with my friends while you were at school.
6/ Dan was doing his homework while Jane was watching TV.
7/ She only saw him twice while he was staying there
8/ While I admit it is difficult, I don't think it is impossible
9/ I never did what you told me while you were having fun.
10/ I was eating apples while you were playing the guitar.
When: 1/ They were reading when the phone rang.
2/ My Mom started crying when she saw the accident.
3/ When he arrived, I was watching TV.
4/ I was having a shower when he arrived.
5/ You were studying English when I phoned.
6/ I was watching TV when she called.
7/ Sammy was waiting for us when we got off the plane.
8/ When Ron was drawing a deer, a mysterious young man came forth.
9/ You were not listening to me when I told you to turn the oven off.
10/ When the phone rang, she was writing a letter.