20. Listen to me just once, OK? Seize the chance, you’ll regret it in the future.
A. therefore B. otherwise C. however D. besides
21. As the party was very informal, Jack stood there looking stiff and in his formal dress.
A. awkward B. comfortable C. convenient D. surprising
22. —Who is the man that just gave us the wonderful speech?
—Mr. Zhang, writer and professor from Tianjin University.
A. the; a B. a; 不填 C. the; 不填 D. the; the
