改为否定句：Mary does her homework at 6:20.Mary _____ _____ _____ _____ at 6:20.

Mary does the housework.(改为否定句) Mary does her homework after school every day（改为Mary does her homework after school every day（改为否定句） Mary does her home work at 6 o'clock (改为Mary does her home work at 6 o'clock (改为否定句） 改为否定句：Mary does her homework at 6:20.Mary _____ _____ _____ _____ at 6:20. Mary could find her cat somewhere.改为否定句 She does her homework at home.(改为否定句） she does her homework in the evening改为否定句 kitty does her homework in the evening,改为否定句 Helen does her homework after supper.（改为否定句） my sister does her homework after supper.改为否定句. Jane usually does her homework after dinner (改为否定句) she does her homework in the evening.改为否定句 My sister does her homework after school.改为否定句 she does her homework aftir shool改为否定句 helen does her homework aftr supper.改为否定句 Helen does her homewprk after supper.改为否定句 My sister does her homework after supper.改为否定句 My sister does her homework on weekends改为否定句