three months是单数还是复数
three months是单数还是复数
three fifths 是单数还是复数?
Class three 是单数还是复数?
three quarters of ...后面是+单数还是复数?
three glasses of water谓语动词是单数还是复数?
是three-month还是 three-months对
Two months后谓语用单数还是复数
several months后面加单数谓语还是复数谓语
three and three-sevenths后面的系动词是单数还是复数
three months is a long for me ,three months 是复数,为什么有要看成整体
family是单数还是复数
school是单数还是复数?