（1）In Africa，people walk to fetch water，get to school and to travel to the market.（2010.1）
应改为：In Africa，people walk to fetch water，get to school and travel to the market.
（2）His grades are not as satisfactory as Jim.（2009.10）
应改为：His grades are not as satisfactory as Jim’s.
（3）Susan likes to swim in summer and skiing in winter.（2009.1）
应改为：Susan likes to swim in summer and ski in winter.
（4）Shakespeare wrote comedies，tragedies，romances，and the plays which were based on historical events.（2008.10）
应改为：Shakespeare wrote comedies，tragedies，romances，and historical plays.
（5）I never saw so many cheerful，courteous students and helpful.（2008.1）
应改为：I never saw so many cheerful，courteous，and helpful students.
（1）The teacher assigned the homework to the students that was too difficult.（2009.10）
应改为：The teacher assigned the homework that was too difficult to the students.
（2）Rita mentioned the operation she had had in the elevator.（2009.1）
应改为：In the elevator，Rita mentioned the operation she had had.
（3）Peter ordered the meal for his friends ranging from fried shrimp to chopped beef.（2008.10）
应改为：Peter ordered the meal ranging from fried shrimp to chopped beef for his friends.
（4）I have followed the instruction faithfully given by the manual.（2008.1）
应改为：I have followed faithfully the instruction given by the manual.
（1）To lose weight，hamburgers must not be eaten.（2010.1）
应改为：To lose weight，you must not eat hamburgers.
（2）Wading through the stream，a rock cut one of my bare feet.（2009.10）
应改为：When I was wading through the stream，a rock cut one of my bare feet.
（3）To join the club，a form should be filled in first.（2009.1）
应改为：To join the club，you should fill in a form first.
（4）While driving on Blueberry Avenue yesterday afternoon，a tree fell toward Jack’s car.（2008.10）
应改为：While Jack was driving on Blueberry Avenue yesterday afternoon，a tree fell toward his car.
（5）To take this course，the professor must give her approval.（2008.1）
应改为：To take this course，she must get the approval from the professor.