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.