I usually do my homework at school 改否定句

I usually do my homework at school 改否定句 I usually do my homework after supper.否定句怎么改? Must I do my homework at school? (否定回答) I do my homework at six thirty 改为否定句怎么改?快 I do homework at school变否定句 I will do my homework after school的否定句 I do my homework every day.改否定句, Tom usually does homework at school变否定句 I do my homework 改为否定句 She does her homework 改为否定句 为什么这样改 把I usually do my homework after school 改为过去式 I usually do my homework after school.改为一般疑问句 Do your homework at school.(改为否定句）