I plan to build an unusual house. It out of old things.

While I _____ my homework in my room, my mother _____ in the kitchen.

I hope you won’t _________ my invitation. It’s my 18th birthday party, you know.—You are my best friend. I am sure to come.

It was after he got what he had wanted ________he realized it was not so important .

When did you see him —______.