第一节单项选择(共15小题;每小题1分,满分15分)
从A、B、C、D四个选项中选出可以填入空白处的最佳选项。
21.-Shall I begin the
lecture?
-I’m afraid we have to wait for a while. John
is coming with a microphone.
- . I
can do without the microphone.
A.I’m sorry B.Excuse me
C.I beg your pardon D.Never mind