21. Try on this red skirt; you will look great it..
A. on B. by C. in D. for
【答案】C。
【解析】考查介词的用法。Sth. be on sb. “衣服穿在某人身上”；sb be in sth”某人穿着什么衣服”。由此可知答案为:C。
22. Over the past 20 years, the Internet has helped change our world in _______way or another for the better.
A. any B. one C. every D. either
【答案】B。
【解析】考查与代词有关的固定短语，in one way or another以某种方式。
23. She stared at the painting, wondering where she it.
A. saw B. has seen C. sees D. had seen
【答案】D。
【解析】see的动作发生在stared前，所以答案为过去完成时。
