30.A.perfect B.better C.reasonable D.correct
29.A.obliged B.likely C.probable D.partial
28.A.privately B.individually C.personally D.generally
27.A.exist B.occur C.survive D.maintain
26.A.adult's B.teacher's C.scientist's D.student's
25.A.heart B.hand C.ink D.paper
24.A.around B.across C.on D.above
23.A.formed B.altered C.believed D.thought
22.A.those B.these C.who D.they