There was an ostrich in the zoo.改成一般疑问句作出肯定否定答案

There was an ostrich in the zoo.改成一般疑问句作出肯定否定答案 There is an ostrich in the zoo改为一般疑问句 如何将There is a bird in the tree.改成一般疑问句?并作出肯定和否定回答. There is panda in the zoo.（改成一般疑问句） there is a small window in the bed改成一般疑问句,做否定和肯定回答. My brother was in the park just now改成否定句.和一般疑问句 用肯定/否定回答 there was a bird in the tree.改成否定句和一般疑问句 There was a car in front of the house just now改成否定句,一般疑问句 There was some water in the glass.改成否定句 一般疑问句 并作两种回答 There was a car in front of the house yesterday改成否定和一般疑问句（一起 There is a table in my room.改为一般疑问句,并作出肯定和否定回答 Bob watch TV in the evening.变否定句、一般疑问句、作出肯定、否定回答