Jill did something.
What did Jill do?
Something made me ill.
What made you ill?
I needed some advice, so I asked xxx.
Who did you ask (for advice)?
Somebody is coming.
Who is coming?
Something had woken me up by the time you arrived.
What had woken you up by the time I arrived?
Somebody is going to buy the cake.
Who is going to buy the cake?
I saw somebody.
Who did you see?
Mary plays something very well.
What does Mary play very well?
xxx phoned last night.
Who phoned last night?
Somebody broke the window.
Who broke the window?
Steve and I played tennis yesterday. xxx won.
Who won?
The children are going to play with somebody.
Who are the children going to play with?
I met xxx on my way home.
Who did you meet on your way home?
I bought something.
What did you buy?
I phoned somebody.
Who did you phone?
Somebody saw the accident.
Who saw the accident?