population是单数还是复数RT

population是单数还是复数RT half of population是单数还是复数 is是单数还是复数?RT eithty percent of the American population后面谓语是用单数还是复数,. the population 是单数还是复数?后面的动词加不加s? 这里应该用复数还是单数?Now,the polulation of our city ____ 7120,000.是is还是are?什么时候是population is,什么时候是population are? ten minutes视为单数还是复数?RT Don't Have 後面是接单数还是复数?RT至于 Have No呢?后面是单数还是复数? Parents是单数还是复数是单数还是复数(简练) ''people''是复数还是单数? clothes是单数还是复数? weather是单数还是复数 chocolate是单数还是复数? family是单数还是复数 people是复数还是单数? people是单数还是复数? milk是单数还是复数 hamburger是单数还是复数?