—_____ and see a film this afternoon?
—That’s a good idea.

—_____ and see a film this afternoon?

—That’s a good idea.

A．Why don’t go     B．Why not go        C．Why not to go      D．Why doesn’t go

—_____ and see a film this afternoon?
—That’s a good idea.

1. A.
   Why don’t go
2. B.
   Why not go
3. C.
   Why not to go
4. D.
   Why doesn’t go