turn one's back to"背对；背弃"，符合句意。

　　8.The door burst open and in rushed the crowd，shouting __with__anger.

　　解析：句意：门突然被撞开，人群冲进来，愤怒地叫嚷着。with anger"愤怒地"，为固定搭配。

　　9.Experts say adults need at least 7 to 8 hours of sleep a night to keep their body __functioning__(function)well.

　　解析：句意：专家说成年人一晚至少需要7到8小时的睡眠来保持他们身体的良好运转。keep sb./sth.doing是一个固定搭配，故设空处需要填写动词－ing形式。

　　10.It can run across water for a __distance__(距离)of severalmeters，avoiding getting wet by rapidly hitting the water's surface with its feet.

　　解析：句意：它可以跑过几米宽的水面，通过用脚快速撞击水面来避免弄湿自己。a distance of..."一段......的距离"。

　　Ⅱ.句型转换

　　1.A：Strangely enough，he knew all about it.

　　B：__Curiously enough__，he knew all about it.

　　2.A：The procession slowly came near to Tian'an men Square.

　　B：The procession slowly __approached__ Tian'an men Square.

　　3.A：Don't put your finger on that pot；it's too hot.

　　B：Don't__touch__ that pot； it's very hot.

　　4.A：I would like to show my thanks for your kindness.

　　B：I would like to__express my thanks__ for your kindness.

　　5.A：The boy escaped punishment by running away.

　　B：The boy __avoided__ punishment by running away.

　　Ⅲ.单句改错

　　1.Mr.Smith come from Canada is interested in the development of business in Shanghai.

　　__come改为coming__

解析：句意：来自加拿大的史密斯先生对于上海的商业发展很感兴趣。本句动词come在句中作定语修饰专有名词，此时应该用现在分词作定语表示主动