Ⅰ.单句语法填空
1.Guide dogs open up the lives of the blind or the (visual) impaired.
答案visually
2.To make their travel more convenient,they decided to build an (arch) bridge.
答案arched
3.One of the most important changes concerns the (invest) of pension contributions.
答案investment
4.As is reported on TV,the fires are likely to (permanent) deforest the land.
答案permanently
5.Even gentle and artful (criticize) takes courage—a courage I haven’t always had.
答案criticism
