题目内容：

4个句型转换,
•1.Would you mind showing me how to start this online tour?(同义句) Would you mind showing me how I ____ ____ this online tour?•2.My brother has been ill for a week.(同义句) My brother ____ ____ a week ago.•3.Our school has changed a lot since then.(同义句)____ ____ ____ great changes in our school since then.•4.He closed the door five minutes ago.(同义句)He ____ ____ the door ____ five minutes ago.