I was told that Wenchuan Earthquake ______ the afternoon of May 12,2008.

---It’s good for you to _______ in class.--- I think so. Thank you.

The little boy pretended        when his mother came in .

－Can I just have a try?－Sure. It doesn’t       if you give a wrong answer.

—How do you improve your listening skill, Mary?—I often do it _________ tapes and English radios.