As the world’s population continues to grow, the ______ of food becomes more and more of a concern.
| A．worth | B．supply | C．back pack | D．list |
Helen is much more kind to her youngest child than to the others,___________ of course, make the others unhappy.
| A．who | B．which | C．she | D．that |
I told you that you shouldn't waste your time playing the computer games,_____________?
| A．didn't I | B．did I | C．should you | D．shouldn't you |
Towards ___________ morning, _________ heavy snow began to fall.
| A．the... a | B．an... a |
| C．a...不填 | D．不填...the |
Moreover, __________you may hardly believe, the examiners had decided in advance to fail half the students taking part in the exams.
| A．which | B．that | C．who | D．whom |
You____________ television. Why not do something more active?
| A．always watch | B．too small a car |
| C．have always watched | D．have always been watching |