第二部分英语知识运用(共两节，满分45)
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。
21．-Does he miss his friends most while studying abroad?
    -No．               his family．
   A．They are            B．Those are            C．There is            D．It is
一、单项选择（10分）
(    ) 1.She       four hours      through the jungle.
A. spent, trek   B. spent, trekking  C. took, to trek   D. took, trekking
(    )2. If your room is dirty, please              .
A. clean up it     B. to clean up it   C. clean it up   D. to clean it up
(   )3.He ________ English for 6 years before he went to college.