1.A is everything.
2.May I take this o to thank you for all your hardwork.
3.I think it’s important to keep a b between work and relaxation.
4.Tell me more d about the job.
5.Edison made a great c to the world.
6.Spare no effort to a knowledge and never give up.
7.Don’t be too t on him---he is only a child.
8.A fire broke out in the market yesterday, but f no one was hurt.
9.Perhaps there is a negative side to his (性格) that you haven’t seen yet.
10.The artist combined different (技巧) in the same painting.
11.His (提议) that the system should be changed was refused.
12.What (吸引) most to the job was the chance to go abroad.
13.Raising animals was only (次要的) to other forms of farming.
14.Would you like my old TV in e for this camera?
15.The (焦点) of attention has changed.
