23. Mr Smith lives _______ that building. His house is _____ the fifth
floor.
A.
in,
on B.
of,
to
C. on, in
( ) 24 Help! Wang Qiang ______an accident
A. was having
B. had had C.
has had
( ) 25 The man also wrote______ of
beautiful pieces of music for the orchestra.
A . hundred B six hundred
C. hundreds