ththere is a cat in front of the house.(改成一般疑问句)
tere are (some dogs) under the tree.(用括号里面的部分提问）
isis there a horse behind the tree?（肯定回答）
are there any pandas in the zoo?（否定回答）
there are some bids in the the tree.（改成一般疑问句 并作肯定回答）