How to read “3,896”? ____________

Never before ________ buying a computer, but now it seems a necessity in my everyday life.

Oh, you have a headache and a cough. __________ have you been like this? —Two days.[ ]

I ________ clean my room on weekdays. I have no time.

3- junior high school life will be over . I will remember those things and teachers ____ are unforgotten .