问题补充：
—Hi，Jack！Im glad I came across you here.
—，Alice?
A. Who is that speaking
B. How about another cup of tea
C. Why？Whats up
D. What can I do for you
答案：
A. Who is that speaking
B. How about another cup of tea
(答案→)C. Why？Whats up
D. What can I do for you
解析：
Who is that speaking：打电话用语；How about another cup of tea：用以提出建议；Why，whats up：表示惊讶，并进一步询问怎么了；What can I do for you：餐馆，商店用语。故选C。
