The earth is ________ than the sun.A. bigger B. smaller C. taller
them______(主格) A.theyB.the
strawberry______(复数形式) A.strawberrysB.strawberries
father______(口语形式) A.mom B.dad
boy ______(对应词) A.girl B.mother
big______(反义词) A.shortB.small