----What’s the matter with you and your friend?----She looks very busy. I want to help her, but I don’t know _____.
He made a fire _______ himself _______ warm.
--- What were you and your cousin doing at this time yesterday? --- He was reading a magazine ________ I was writing an e-mail.
Bob swims _______ than I, but he doesn’t swimmy brother.
We should have our students ________ hard instead of ________ too much time playing games.
My father bought a new bike for me yesterday. It’s a structure of__________.