there is a cat in front of the house.(改成一般疑问句)- Is there a cat in front of the house
tere are (some dogs) under the tree.(用括号里面的部分提问）- What's under the tree
isis there a horse behind the tree?（肯定回答）Yes,there is.
are there any pandas in the zoo?（否定回答）No,there aren't.
there are some bids in the the tree.（改成一般疑问句 并作肯定回答）-Are there any birds in the tree
Yes,there are.
不明白的再问哟,请及时采纳,多谢!