Mr.Smith______ Chinese for two years.He's much better at it now.（ ）
A．learnsB．was learning
C．has learnedD．will learn
We have decided to sell five things ______ we no longer use．（ ）
A．thatB．whereC．who
Brown draws a picture of the criminal，and the police put ______ on the Internet to find him．（ ）
A．himB．herC．it
The world is changing with every second；and China，______ too，with every second．（ ）
A．is changingB．had changed
C．changed
______ lucky they are，I thought，to have each other．（ ）
A．What aB．WhatC．How
Every one of us ______ always breathe the same breath and share the same future as the people．（ ）
A．mightB．shouldC．could