Your bedroom is so dirty. Would you please _______, Peter?—OK, mum. I’ll do it right away.

Are these books yours, Mike?—No, they aren’t. They belong to ______.

How do you go to work? —I go to work_____bus. [ ]

Could you please ________ the window? It’s cold outside.—Oh, I’m sorry.

The bus hit against a tree in the fog and __________to the deep valley, with ten passengers killed and twenty wounded.