Why so many youths are _____ on playing computer games often puzzles us a lot.
Tom, as well as the other children who ____ no parents, ____ good care of in our country.
Go on ______ the other exercise after you have finished this one.
We grow all our own fruit and vegetables, ____ saves money, of course. A asB. which C. thatD. what
If you have some difficulties ____ your grammar, you had better ask your teacher ____.
--- How are you getting along with your studies? --- Not very well, ____.