问题补充:
10.--- Hello, John here, can I speak to Mary , please?
---.
A. Of course, but she is out
B. She will be back in a moment
C. You may leave a message
D. Hold on, please
答案:
A. Of course, but she is out
B. She will be back in a moment
C. You may leave a message
(答案→)D. Hold on, please
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