Wecannotfigureout的精選

問題詳情： Wecannotfigureout______quiteanumberofinsects,birds,andanimalsaredyingout.A.that  B.as       C.why      D.when【回答】C。考查賓語從句。figureout爲及物動詞短語，故其後跟的是賓語從...