1. More chances to learn from each other ______ for students by working in groups.

　　A. provide B. will provide

　　C. was provided D. are provided

　　【点拨】第①步：分析句意。通过小组合作，将会为学生们______更多互相学习的机会。第②步：分析选项。provide一般现在时;will provide一般将来时;was provided一般过去时的被动语态;are provided一般现在时的被动语态。第③步：分析句子结构。谓语动词“provide”与主语“More chances”之间为动宾关系，应用被动语态。主语为“More chances”，谓语动词用复数形式。故选D。

　　2. Many people ______ that there would be a snowstorm next week.

　　A. tells B. told C.were told D. is told

　　【点拨】第①步：分析句意。很多人______下周将有一场暴风雪。第②步：分析选项。tells一般现在时;told一般过去时;were told一般过去时的被动语态;is told一般现在时的被动语态。第③步：分析句子结构。谓语动词“tell”与主语“Many people”之间为动宾关系，且宾语从句时态为过去将来时，所以用一般过去时的被动语态。故选C。

　　3. Food safety is very important. So some rules______to stop people from polluting food.

　　A. should make B. should be made

　　C.was made D. has been made

　　【点拨】第①步：分析句意。食品安全非常重要。所以一些措施______来阻止人们污染食物。第②步：分析选项。should make一般现在时;should be made含有情态动词的被动语态;was made一般过去时的被动语态;has been made现在完成时的被动语态。第③步：分析句子结构。谓语动词“make”与主语“rules”之间为动宾关系，应用被动语态。根据句意可知，此处是指“规则应该被制定”，应用情态动词“should”。故选B。

　　4. I plan to build an unusual house. It ______ out of waste materials.

　　A. is built B. has built

　　C.will be built D. builds

　　【点拨】第①步：分析句意。我计划建造一个不同寻常的房子。它______由废弃材料制成。第②步：分析选项。is built一般现在时的被动语态;has built现在完成时;will be built一般将来时的被动语态;builds一般现在时。第③步：分析句子结构。谓语动词“build”与主语“It”之间存在动宾关系，应用被动语态。根据句意可知此处表示还未发生的事情，应用一般将来时。故选C。

　　5. In order to make our hometown more beautiful, lots of trees______in the past three years.

　　A. are planted B. were planted

　　C. have been planted D. will be planted

　　【点拨】第①步：分析句意。为了使我们的家乡更漂亮，很多树______在过去的三年里。第②步：分析选项。are planted一般现在时的被动语态;were planted一般过去时的被动语态;have been planted现在完成时的被动语态;will be planted一般将来时的被动语态。第③步：分析句子结构。谓语动词“plant”与主语“trees”之间存在动宾关系，应用被动语态。根据时间状语“in the past three years”可知应用现在完成时。故选C。

　　6. Hurry up! Once the concert starts, nobody ______(allow) to enter the concert hall.

　　【点拨】第①步：观察语境，找到关键词“Hurry up!”可首先判断出本题的时态是一般现在时;第②步：分析语境“nobody”与“allow”之间为动宾关系，应用被动语态。故填is allowed。

　　7. The speech competition___(regard) as a success. Many students joined it and they expressed their ideas as well.

　　【点拨】第①步：观察语境，找到关键词“joined”，“expressed”可首先判断出本题的时态是一般过去时;第②步：分析语境“competition”与“regard”之间为动宾关系，应用被动语态。故填was regarded。