During the past ten years, there have been_____changes in the country.

English _____ in a new way at my college in the past few years.

In the past 50 years, there _____ a great increase in the amount of research _____ on the human brain.

In the past 50 years, there ______ a great increase in the amount of research ______ on the human brain.

In the past 50 years, there _____ a great increase in the amount of research _____ on the human brain.

Over the past 20 years, the Internet has helped change our world in either way or another for the better.

The goal, which they are unlikely to live to see , is tocure, prevent or manage all diseasesin the next 80or so years.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

The （） is used for hauling in or letting out the wires or ropes.

The（）may examine or re-examine the goods or take samples from them straightaway in the absence of the consignee or the consignor whenever it considers this necessary.

“挑战杯”全国大学生竞赛包括哪两类赛事（）

哈工程学生近3年在“挑战杯”中国大学生创业计划竞赛及课外学术科技作品竞赛、亚太及全国大学生机器人电视大赛、美国国际大学生数学建模竞赛、全国大学生电子设计竞赛等各类国际国内赛事中获得国际、国家级奖（）余项。