A.interfere
B.integration
C.exchange
D.mixture

A.interesting
B.stressful
C.free
D.easy

A.interesting
B.stressful
C.free
D.easy

A.way
B.law
C.rule
D.policy

A.way
B.law
C.rule
D.policy

A.and
B.or
C.not
D.nor

A.of
B.in
C.about
D.for

A.taken
B.spent
C.met
D.indicated

A.written
B.listed
C.typed
D.valued

A.receive
B.tell
C.require
D.ask