21 .We have eight managers in our company , and five of ______ are in their twenties.
A . them B. whom C. who D . which
22. The English play______ the famous actor acted was a great success.
A . for which B . at which C . in which D . on which
23 . We each ______ a bicycle , but most of us ______ use it frequently .
A . have; don’t B .has; don’t C .have; doesn't D .has ;don’t
