my mother has some letters to type改为否定句

my mother has some letters to type改为否定句 my has some pens.改为否定句. My mother likes swimming改为一般疑问句怎么改?He has some books变为否定句 My mother has to do housework every day 改为否定句怎么改?太急了! My mother has six basketball.改为否定句. my mother has lunch at home.改为否定句 My mother has a knife 改为否定句 My brother has some toys.(改为否定句) My sister has some friends in school 改为否定句 They sell some vegetables to my mother 改成否定句 he has to do some uskilled work 改为否定句 My mother goes to work on Monday 改为否定句