句型转换(共4小题；每空1分，满分1 0分)
按要求改写下列句子，并将答案写在答题卷上。
There are 24 boys and 20 girls in our class．(同义句转换)
Our class is                      24 boys and 20 girls．
Our hometown has changed a lot over the years．(同义句转换)
              ．have taken place in 0ur hometown over the years．
We have lived in this area since we moved to the city．(划线部分提问)
have you lived in this area?
We often have a communication with each other by email．(同义句转换)
We often                      ．with each other by email．