People have planted a great many trees in order to ________ wind and sand in the desert.[ ]

eople won the “China’s Green Figure”award, a title ____ to ordinarypeople their contributions to environmental protection

Thank you. It’s kind of you to help mewith my English. —________.

．The book is for the students ________ native language is not Chinese to study in a Chinese university.

Yao Yuan,a disabled woman, won the National Championships Cup last week.—Mygoodness! She _______a lot of difficulties!