5. Had I known her name, _____

A. or does she know mine?　　　　　　B. and where does she live?

C. she would be beautiful.　　　　　 D. I would have invited her to lunch.

3 If he had learnt about computers，we would have hired him to work here. _________________________________________

I don't know his telephone number. If I knew his telephone number，I would tell you.