1 . Students before exams, ________(benefit) from years of drills, looked calmer than some of their teachers. (所给词的适当形式填空）

2 . Sonia explained ___________ how she would solve the problem. In ___________, she set an example to others preparing to make a speech.(brief)

3 . We should have a ________ (balance) diet rich in fruit and vegetables. (所给词的适当形式填空）

4 . Parents worry about the effect of computer games on their adolescents’ __________ (behave). (所给词的适当形式填空）

5 . Mr. Green stood in defense of the 16-year-old boy, saying that he was not the one _______ ( blame) (所给词的适当形式填空)

6 . The trees ________(blow) down in the storm have been moved off the road. (所给词的适当形式填空）

7 . Humankind should avoid such a war as could result in the use of chemical and ________ (biology) weapons. （所给词的适当形式填空）

8 . The melon the Smiths served at dinner would have tasted ______________(good) if it had been put in the fridge for a little while. (所给词的适当形式填空)

9 . The exhibition is expected ________ (begin) in February next year. （所给词的适当形式填空）

10 . Over the years, there ______ (be) a number of different techniques to help designers approach this important point. (所给词的正确形式填空)