单选题：Listen to Li Yang, founder of Crazy English. He speaks Engl..

—Why didn't you tell him about the meeting?—He rushed out of the room____ I could say a word.[ ]A. after B. until C. when D. before

—Why didn't you pay the bill for Tina?—I offered to, ______ she refused.[ ]A. andB. butC. orD. so

—It’s a long time________I saw you last.—Yes, and what a pity it is now that it will be a long time________we see each other again.[ ]A. before; sinceB. since; whenC. since; beforeD. when; before

He supposed he'd be late for the film The King's Speech ______ he ended up getting there ahead of time.[ ]A. butB. orC. soD. for

Turn the heat down ________ your cake will burn.[ ]A．and B．orC．soD．but