Everyone knows ______ Olympic Games will be held in London in July, 2012.

.— Is there any possibility ____ you could pick me up at my office at 7：00 tomorrow evening?— No problem.

Why are the tax collectors so busy? —Many people prefer to have their tax forms completed by a professional rather than ___.

Yesterday I received a letter from John.—You did? I hear he _______ for America next year.

Let’s go ____ a trip to Mountain Huangshan. It’s beautiful. [ ]