--Who would you like to see at the moment?--The man ____Mr.White .
They suggested that the library ________ open during the vacation.
If I can help________, I don’t like to working late into the night.
Only by _______ your attention _______ what you are learning can you learn it well.
—Do you mind if I smoke here? — ___________.
It’s not _________ good idea to drive for four hours without _______ break.