half a kilo of meat是单数还是复数

half a kilo of meat是单数还是复数 a kilo of tomatoes 是单数还是复数 He wants half a kilo of meat half of population是单数还是复数 I want ______ of meat,please.A.half kilo B.a half kilo C.hal He wants half a kilo of meat改否定句 half 是单数还是复数 half是单数还是复数 "half of the money"是单数还是复数 half of the books 做主语是单数还是复数 one apple and a half是复数还是单数? one cake and a half 谓语是单数还是复数