第一节：语法和词汇知识(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。
21. —I apologize to you for my rudeness yesterday, Mary?
—Never mind, and I think ______ of it.
A. a little B. little C. much D. highly
22. — I don’t know ______ Mr. Green will come to see us.
— He will help us with our English.
A. why B. when C. how D. where
