I must do my homework.
I have to clean my room.
I must not disturb the lesson.
I don't have to use my computer.
Do you have to go to the bathroom?
-Yes,I do.
-No,I don't.
节日快乐!
I must do my homework.
I have to clean my room.
I must not disturb the lesson.
I don't have to use my computer.
Do you have to go to the bathroom?
-Yes,I do.
-No,I don't.
节日快乐!