一个8选一数据选择器的输入端数据有个。
A. 1
B. 2
C. 4
D. 8
选择正确的回复：I'm afraid we have to change the appointment. I have something important to do.
A. That's all right.
B. It's my pleasure.
C. I have a busy schedule.
D. I wish I could.
选择正确的回复：I just called to confirm our appointment at 10 a.m. tomorrow.
A. Sure, I'll be expecting you at 10.
B. Sorry, I'll be at a meeting at 10.
C. Well, I'll be seeing Mr. Peterson at 10.
D. No, I'll be in a train at 10.
选择正确的回复：Can you make it Monday next week?
A. Tuesday is a better time for me.
B. Tuesday is fine.
C. I'll be seeing Jane on Tuesday.
D. I'm fully occupied Tuesday.
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