提示：Peter给Johnson教授打电话请病假，接电话的是教授的助手Sally。

( Peter=P；Sally=S)

P: Hello!  This is Peter speaking. ______ 51 ______, please?

S: I'm sorry. Professor Johnson is not here at the moment. This is his assistant, Sally.________52________?

P: Yes. Please tell the professor that I'd like to ask for sick leave for tomorrow.

S: Sorry to hear that. May I ask_______53_________with you

P: I' m running a fever. I' ve caught a cold.

S: Oh, ________54______?     

P: No, not very serious, but the doctor told me to stay in bed and have a good rest. S: I see.l'll________55_______as soon as he comes back.

P: Thank you. Goodbye!

S: Bye!