He prefers to live in native Hong Kong ________ the United States, because he can’t ______ speaking English every day. 

Sometimes the ______ between the reality and the dream is so great that it produces disappointment. 

---Why are you still here? Everybody has gone to attend the lecture by the president.--Oh, I ___________ about it!

To tell you the truth, I think it is you, ________Mr. Smith, ________.

 –Mary looks down today, what’s up? --Well, ________happened between Mary and me is none of your business.