Lee doesn’t _____ what people say about him.
A. concern
B. matter
C. care
D. disturb
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It has been known that old people have found _____ hard to cope with the changing world.
A. that
B. which
C. it
D. how
The _____ of putting sugar in the medicine is of course to sweeten it so that it won’t tastes bitter.
A. reason
B. cause
C. need
D. purpose
It is easy to see the (superior) of these goods to others.
(inform)about the robbery, the policemen rushed out into their cars to catch the robbers.