—Is it that Jack often plays computer games makes his parents worry about him ?—Yes , I think so .
.After the new technique was introduced, the factory produced _____ cars in 2002 as the year before.
— Do you mind if I open the window?— ______. We’d better let in some fresh air.
You won’t take me ______ easily. I know your tricks.
In order to continue to learn by ourselves when we leave school someday, we must ______ learn how to study in the school now.
Today is Christmas Eve. The department store ______ be very crowded.