Speaker A: Excuse me, Professor Smith, can you spare me a few minutes? There‘ s something
Speaker B :__________
A.Of course not. Haven" t you seen have been pretty busy now?
B.Well, I" m afraid we have to find some other time. I" m fully occupied now.
C.No. I" 11 have an important meeting to attend this evening.
D.Not possible, as I don" t know how long you will keep me.