21．The party last night wassuccess. We sang and danced until it came toend at 12:00.
A．a;an B．a; the C．the;an C．/;an
22．In the face of influenza A(H1N1) , many citiesmasks to the passers-by in the streets.
A．refunded B．distributed C．purchased D．accumulated
23．—Does the young man standing therethe company?
—No, the company ishis father.
A．in possession of ; in possession of
B．have possession of ; in the possession of
C．have possession of；in possession of
D．in the possession of；in possession of