Use present perfect in the sentences below:
1. I ______________________(not to pay) the bill yet.
2. Sally! I ________________ (not to expect ) to see you here! What (you/to do)
in New York?
3. Jean, I’m so glad you have got here at last. I ________________ (to wait) for
you all day.
4. Sorry, but I ______________ (not to finish) that work yet..
5. My car _____________ (to break down), so I have been walking to work these
days.