important tool(工具)the computer is!  -I think so.

A. What a        B. How            C. What an      D. How an

        difficult questions the teacher is asking! Only a few students can answer them!

______interesting the work is !

    A. What a       B. What an      C. How              D. How an

___________ great fun it is to fly kites! ________ fantastic time the children are having!

A. What, What a         B. What, What     C. How, How a      D. What a, What

Listen! ______ sweet voice she has!

A．What a           B．What             C．How             D．How a