单项选择题
A.whether B.what C.whom D.how
A.toconsider B.considering C.consider D.considered
A.forbid B.forbidding C.forbade D.forbidden
A.examination B.service C.check D.insurance
A.pleasantB.thankingC.gratitudeD.thankful
A.much B.little C.more D.less
A.volunteeredB.fanciedC.enteredD.imagined
A.world B.earth C.floor D.ground
A.failing B.failed C.fail D.failure
A.decline B.reject C.refuse D.resist
A.appeared B.vanished C.lost D.entered