单选题：They were walking along the shore _______ a huge wave appear..

We've offered her the job, but I don't know ________ she'll accept it.[ ]A. whereB. whatC. whetherD. which

Listen to Li Yang, founder of Crazy English. He speaks English _____ he were American.[ ]A. ifB. becauseC. even ifD. as if

—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