1.A.at B.with C.by D.through

　　2.A.study B.imitate C.stimulate D.learn

　　3.A.mates B.relatives C.members D.fellows

　　4.A.which B.that C.those D.ones

　　5.A.even B.despite C.even if D.in spite of

　　6.A.mind B.concern C.care D.involve

　　7.A.hire B.apply C.adopt D.use

　　8.A.in public B.at most C.at large D.at best

　　9.A.right B.privilege C.share D.possession

　　10.A.consists B.comprises C.constitutes D.composes

　　11.A.seldom B.much C.never D.often

　　12.A.prospect B.way C.reason D.necessity

　　13.A.primary B.first C.principal D.prior

　　14.A.tips B.mouth C.lips D.tongue

　　15.A.besides B.and C.or D.but

　　16.A.hear of B.attend C.hear from D.listen

　　17.A.former B.formula C.formal D.formative