二、选择填空（共 25小题;每小题 I分,满分 25分）
A)单项填空从 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
21. There is _______"u" and _______"s" in the word "university".
A. a, an B. an, a C. an, an D a, a,
22. Why _______our local theatre with us?
A. not to visit B. don't visit C. not you visit D. don't you visit
