用英语单词组句,还要回答.1.Are these 2.Are those 3.Is there 4.Was there

are these your books?--- yes,they are。/ no,they are not。are those footballs?--- yes,they are。/ no,they are not。is there any book on the shelf?---yes,there is。/no,there isn't。was there a king living here?--- yes,there was。/ no,there wasn't。are there many students in the campus?--- yes,there are。/ no,there are not。were there many books on the shelf?--- yes,there were。/ no,there weren't。