You must eat _____ meat if you don’t want to be fat.

It is commonly assumed that the growth of GDP and the development of people’s living conditions are not _______cause and effect

Some experts think the wolf’s team spirit for survival is ____ is needed in today’s competitive culture.

Many developingcountries are unwilling to pursue their economic development ______ destroyingthe environment despite there being several financial crises

Many new workers______and in six month they will be sent to build a new railway