A.Needs and desires
B.Leisure
C.Disposable money
D.Improvement of transportation
A.position
B.place
C.charge
D.change
A.respectively
B.respective
C.separately
D.separate
A.despite of
B.so as to
C.but also
D.instead of
A.call out
B.call off
C.call to
D.call on
A.pay
B.paid
C.to pay
D.paying
A.studying ... he is
B.to study ... he is
C.studying ... he will be
D.to study ... he will be