句型转换
（1）There is some tea on the table .( 改为一般疑问句，并作肯定回答)
_________ ________ ________ tea on the table?
Yes, ______  ______.
（2）There are three bears in the forest.（改为一般疑问句，并作否定回答）
_______ ______ three bears in the forest?
No, ________  _________.
（3） There is a bird in the tree.（改为否定句）
_______ _______ a bird in the tree.