用所给动词的正确形式填空：1The children (visit)the farm tomorrow afternoo

are going to visit
是根据后面“are not they?”判断的
反意疑问句里的系动词或助动词要与主句中的相搭配
e.g.:
It is a pen ,is not it?
She went to the zoo yesterday ,did not she?
He does not like bananas ,does she