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!

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 l’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：N0，not very serious，but the doctor told me to stay in bed and have a good rest．

S：I see．I’ll________55________ as soon as he comes back．

P：Thank you．Goodbye!

S：Bye!

51_____________

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52__________________________

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54__________________________

请帮忙给出每个问题的正确答案和分析，谢谢！