题目内容：

句子改为被动语态
the studens are reviewing the old words with the help of the teacher.
the Korean football team beat the chinese football team again yesterday.
did the old man ride hisbicycle to the shopping center.
have you finished reading the best-seller.
you'd better not run after a dog in the busy street .
主动形式改为被动
no notice was taken of my work ,which really made me very annoyed.
all the preparations for the task have been completed,and we're ready to start.
the boy is being taught by her at the moment.
the best should be made to improve the environment.
who is the doctor going to be examined by the doctor next.
have the stories ever been told by the grandpa.
why weren't you shown around theBird's Nest by the guide last week.
one of the novels isn't being written by the yong writers.

优质解答

主动变被动
The old words are being reviewed by the students with help of the teacher.
The Chinese football team was beaten again by the Korean football team yesterday.
Was the old man's bicycle riden by himself to the shopping center?
Has the best-seller read by you?
A dog should not be run after in the bushy street.
动变主动
I took no care of my work,which really made me very annoyed.
W have completed all the preparations for the task,and we're ready to start.
She was teaching the boy at the moment.
We should do the best to improve the environment.
Who the doctor is going to examine next?
Has the grandpa ever told the stories?
Why didn't the guide show you around the Bird's Nest last week?
The young weiters isn't writing one of the novels.