(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：0h,________54_______?
P：No, not very serious, but the doctor told me to stay in bed and have good rest.
S:I see. I'll___55________as soon as he comes back.
P：Thank you. Goodbye!
S：Bye!
