Bill: Well, Tom. I’m sorry I must be off now.
Tom: ______. I hope to hear from you soon.
Bill: Well, Tom. I’m sorry I must be off now.
Tom: ______. I hope to hear from you soon.
A、 Enjoy yourself
B、 That’s all right
C、 Keep in touch
D、 Cheer up
【正确答案】:C
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