Helping others is a habit，______you can learn even at an early age.
A it B. that C. what D. one
You can make a complaint to the local government ___ you are happy with the way they deal with the matter.
A．unless B．if C．once D．as
The patient looks much better .
-------_____is it that has made him ____he is today ?
A．what ; that B．That ; that C．What;which D．What;what
--How much do you know about the 3D film technology?
--A little. Not until ____the hot movie Avatar ____some about it.
A．did I see ,did I begin to learn B．I saw, I began to learn
C．I saw, did I begin to learn D．did I see, I began to learn
The water___cool when I jumped into the pool for morning exercise。
A．was felt B．felt C．is felt D．feels
His wife is constantly finding ____with him,which makes him very angry.
A．errors B．shortcomings C．fault D．flaw
