第二部分：单项填空（共20小题，每小题1分，满分20分）
从四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项标号涂黑。
21. Li Yang, the founder of Crzay English, is _______success in business. However, his marriage ended in_____failure.
A．/；/ B．/；a C．a；a D．a；/
22. When he was doing the software development project, he ______ many problems that he had to solve on his own.
A. came up B. came through C. came across D. came out
23. The house rent is expensive. I’ve got about half the space I had at home and I’m paying here.
A. as five times much B. as much five times
C. much as five times D. five times as much
24. I regret ______ you that my daughter has already regretted ______ out with you. So leave her alone and
