Mary decided not to work on the program at home because she didn’t want her parents to know what she __________.
A．has done B．had done C．was doing D．is doing
It’s very surprising that Lucy _____ German so quickly—she hasn’t lived there very long.
A．picked up B．looked up C．put up D．made up
The internet has made ____ possible for everyone to talk with friends miles away.
A．that B．this C．one D．it
My mind wasn't on what he was saying so I'm afraid I ______ half of it.
A．was missing B．had missed C．will miss D．missed
--- Can you believe I had to pay 50 yuan for a haircut?
-----You should try the barber’s I go. It’s only 10.
A．as B．which C．where D．that
One of our rules is that every teacher wear school uniform while attending the school flag-rising ceremony.
A． might B． shall C． could D． will
