---By the way, do you know the National Spelling Bee?

---No, I never heard of it．Tell me ______, please．

1. A.
   what is it
2. B.
   what it is
3. C.
   it is what
4. D.
   is it what

?By the way, do you know the National Spelling Bee?

?No, I never heard of it. Tell me ________, please.

A. what is it

B. what it is

C. it is what

D. is it what