1.I know the answer.(一般疑问句) ______ ______ know the answer?
2.We can see some birds.(一般疑问句) ______ ______ see ______ birds?
3.There is a computer in my house.(一般疑问句)
______ ______ a computer in house?
4.There are some flowers on the teachers'desk.(一般疑问句)
______ ______ ______ flowers on the teachers'desk?
5.There are some apples on the tree.(否定式)
There ______ ______ ______ apples on the tree.