基本信息
第一节：单项填空（共15小题，每小题1分，满分15分）
从每题所给A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
例：It’s so nice to hear from her again. , we last met more than thirty years ago.
A.What’s moreB．That’s to say.C．In other wordsD．Believe it or not
21.He has been ________ the computer for two hours, chatting with a boy from Australia .
