第一节：单项填空（共15小题，每小题1分，满分15分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
例：My little brother ______20yuan on his new bag, so my mother was angry.
    A．pays        B．paid        C．spend         D．spent
答案是 D．
21．It was so _________ having to sing in public.
   A．embarrassed  B．embarrassing   C．nervous    D．embarrassingly 
22．Why not try to _____ your story into a novel?
   A．experiment     B．expect  C．expense     D．expand
23．Would you please _______ the usage of the last word in this sentence, Mr. White?