There is ________John Peter asking for you.

There is ________John Peter asking for you.
A.an B.a C.the D./
It is really cool to realize your dream_______great effort.
A.through B.of C.till D.about
3. You ______be serious!You're actally going to lend him money again?
A. needn'tB.can't C.shouldn't D.musten't
4._____ interesting the book is!
A.How B.What an C.What D.How a