用may,can or cannot.
Mary:Yes,I(1).How about you, Andy?
Andy:Oh,I(2)swim.But you(3)still go swimming with Mary and I (4)sunbathe on the beach.
Steve:That sounds great ! I maysunbathe for an hour and go swimming for half an hour.(5)I phone Catherine as well?
Sandra:Sure.Let's phone her now.
Steve:Oh,but she is not at home now.
Andy:You(6)call her at 6767 8888.It's her mobile number.
Steve:Thank you.(7)you lend me your mobile phone? I forgot to bring mine.
Andy:Yes, here it is.