（1）、Scientists believe that little pleasures, such as a bar of chocolate, a glass of wine can improve our health, because of the psychological l they give us.
（2）、Some people are o about cleanliness.
（3）、The south of the country was worst a by the drought (影响) .
（4）、Lack of exercise can lead to feelings of d and exhaustion.
（5）、School crime and violence cuts across (城市的), rural and suburban areas.
（6）、In her spare time Bonnie does (志愿的) work at a local nursing home.
（7）、Clouds surrounding Venus t the sun's energy and make the surface of the planet very hot.
（8）、People on the earth s Saturn's rings in the 1600s.
（9）、Existing models will eventually be r by new designs.
（10）、Bob begged his daddy to b him up to look over the wall into the mysterious garden.
