21．—Did he the match?
—Certainly, No one can him.
A．defeat; win over B．win; match
C．win against; win D．beat; defeat
22．The more one is the English-speaking environment, the better he or she will learn the language.
A．exposed to B．fined in C．caught D．kept up
23． for the breakdown of the school computer network, Alice was in low spirits.
A．Blaming B．Blamed C．To blame D．To be blamed
