Lora，you ____________ leave all your books on the floor like this!
| A．wouldn’t | B．mustn’t | C．needn’t | D．may not |
The __________ conclusion is not a set one. It still needs further testing.
| A．tentative | B．basic | C．bare | D．systematic |
People are _________the use of alternative energy sources. Because the fossil fuels _________will be used sooner or later.
| A．pushing for/ consumed | B．struggling for /being consumed |
| C．pushing for/ being consumed | D．preferring /being used |
Now young people ___________to use computer to develop their ___________skills.
| A．are trained/ problem solving | B．are being trained/ solving problem |
| C．are being taught/ problem solving | D．are taught/ solving problem |
The future of developing countries__________ the hands of children, which is __________education and training for young people is important.
| A．lies in/why | B．is put/ because | C．is laid/ the reason | D．depends on/why |
____________ poverty, wars _____________ thousands of lives in Africa so far.
| A．At top of/killed | B．On top of/claimed |
| C．Apart from/ have claimed | D．Except for/have killed |