——John always thinks of others instead of himself.
—— So he does. It is _______ of him to want to help others.
A．aggressive B．conventional C．evident D．typical
Scientific researches show that to _________ a language one had better often get exposed to it.
A．acknowledge B．access C．acquire D．assess
Recently a survey ____ prices of the same goods in two different supermarkets has caused a heated discussion among citizens.
A．comparing B．compared C．compares D．being compared
With international ______ and education exchanges increasing every year, the number of Chinese students studying abroad has increased rapidly.
A．cooperation B．competition C．construction D．conflict
—What's the matter with the man hanging his head there?
—Well，if you ________ know, he was caught stealing my bike.
A．must B．may C．can D．shall
GM, Chrysler and Ford expressed their desire that they ________ in want of a $25 billion government aid to pull through the financial crisis.
A．were B．would be C．be D．ought to be
