______ reduce pollution，the government has made a policy to restrict the use of plastic bags in some areas．

Rare species in the world, ______ by hundreds every year, must be jointly preserved by all countries, or humans will encounter ecological disaster in the near future.

 The foreign friends you referred to ______ looking forward to ______ around our school.

 I can’t stand _______ with Jane in the same office. She just refuses _______ talking while she works.

(2013·山西四校二模)Studies show that students often ________ to too much pressure tend to develop mental problems.