Nowadays what many young people lack is not book knowledge but practial experience .
Students are supposed to spend most of their time on study not on TV.
It is well known that the Chinese government is sparing no effort to make China become a country with green mountains , beautiful scenes and blue skys.
A friend is someone who shares happiness and sorrow with you whatever happens.
Many books and magazines can provide us with food for the mind .
Are you conscious of the man who is staring at you ?
No sooner had he finished watching the programme about the extinct species
than he determined to join the wildlfe protection organization.
It is shameful for us to cheat customers .
Languages should change with times just like all things in the world .
The parents enjoined the children not to play by the rivers for fear something unexpected should occur.