Shop assistant：Good morning.Can I help you？
Customer：（）I’m just looking round.

Harry: Well, I have to be on my way now. （）Richard: You, too. And don’t forget to drop me a line.

A．Goodbye!
B．Take care.
C．Enjoy yourself.
D．Have a nice trip.

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Doctor: What seems to be the matter?Patient: Well, my heartbeat is fast and I have trouble breathing recently.Doctor: （）Your weight is giving much burden on your heart.

A．I have to give you some medicine.
B．I' m sorry. Your weight is a problem.
C．You need some exercises.
D．I' m afraid you have to lose at least 40 pounds.

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