I would wear a shirt and tie to the party if I ________ you. It’s more polite.
A. were                 B. will be                  C. am

Look at the famous painting __________ Picasso. It’s excellent.

A．wrote	B．by
C．paint	D．drew

—______ is your best friend?
— Linda, I guess.

A．What

B．Who

C．Why

D．Where