Physical exercises not only are useful for character training but also can ________ man’s body.

Liu Xiang achieved his __________ to become the first man to cover the 110-meter hurdles in less than 12.91 seconds.

The teacher highly recommended that I ___________ more to improve my English.

Can you think of some cases __________drivers obviously knew the traffic rules but did not obey them.

Tony, would you go and see if Sam has any difficulty __________ his tape recorder?

----Is it my age __________ the boss minds?  

----I’m afraid not. He will consider __________ necessary to have an experienced assistant.

Won’t you __________ me in a walk after supper? It will do good to your health, you know.

I would like a job which pays more, but ____________ I enjoy the work I’m doing at the moment.

The good thing about children is that they           very easily to new environments.

--People should stop using their cars and start using public transport.

-- __________. The roads are too crowded as it is.