đặt lại câu nghĩa không thay đổi:
7,when did you buy this shirt?
=>how long.................................
8,this is the first time i seen such a fat man.
=>i haven't........................................
9,i haven't eaten anything since lats night.
=>the last.......................................
10,i haven't taken a bath for two days.
=>it is......................................
7. How long have you bought this shirt?
8. I haven't seen such a fat man before.
9. The last time I ate something was last night.
10. It is two days since I have taken a bath.
8/ i haven't seen such a fat man before