Would you like to watch the three-D film Titanic with me–Certainly. I don’t mind seeing it again although I _____ it twice.

－Mr. Smith, how can I get a good grade in the monthly test－You’d better ______all the questions before you start to answer them.

Liu Xiang had worked hard . ________， he won the first prize in the 28th Olympic Games.

The environment here becomes better and better. ______ birds are coming back.

－Can you go to the movies on Saturday or Sunday －_________ day is OK. I’m free on both days.