Thomas Edison was a great (invent) ______ , who made lots of discoveries and inventions in the field of electricity.

A．No, that’s not good.
B．Yes, it is.
C．It doesn’t matter.
D．So do I.

A．Lucy King isn’t at home right now.
B．Lucy King doesn’t want to answer the phone.
C．Lucy King is busy now.
D．The man got the wrong number.