用所给词的适当形式填空I____(mail)the letter last week.Haven't you got i
用所给词的适当形式填空
I____(mail)the letter last week.Haven't you got it?
I am trying hard to____(pass)the file examination.
The book is worth____(read).
Tom,____(learn)in your room.
Mike,____(turn)down the radio.