二. 单项选择 (每小题1分，共15小题，计15分)
21. What has made him upset recently?
_____ alone to face a troublesome milk case.
A. Left B. Being left C. Having left D. To leave
22. If this dictionary is not yours, _____ can it be?
A. what else B. who else C. which else’s D. who else’s
23. The official _____ of the cause of the accident appeared in the newspaper.
A. notice B. note C. saying D. announcement
24. _____ some officials, the general inspected his army.
A. Following B. Followed by C. Being followed D. Having been followed
25. It was the training _____ he had as a young man _____ made him such a famous writer.
A. when; that B. that; when C. that; who D. that; that
26. I came into the classroom, _____ my seat and sat down to read.
