问题描述：
Mr.and Mrs.smith often（ ）their children to zhongshan park
1.Mr.and Mrs.smith often go to Zhongshan park with their children.
Mr.and Mrs.smith often（ ）their children to zhongshan park.
2.sometimes they go there by bus and sometimes on foot .
they sometimes take a bus and sometimes（ ）there.
3.the children play games there for about two hours.
the children（ ）about two hours playing games there.
1.Mr.and Mrs.smith often go to Zhongshan park with their children.
Mr.and Mrs.smith often（ ）their children to zhongshan park.
2.sometimes they go there by bus and sometimes on foot .
they sometimes take a bus and sometimes（ ）there.
3.the children play games there for about two hours.
the children（ ）about two hours playing games there.
问题解答：
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