his hobbies是单数还是复数

his hobbies是单数还是复数 her、his是复数还是单数 他的爱好是什么用英语提问的话,be动词是用单数还是复数?what is/are his hobby/hobbies?究竟怎么写? jim and his brother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? half是单数还是复数 half 是单数还是复数 news是单数还是复数 pair是单数还是复数?