my erase is (in the pencil cose)对括号里的提问
（Where ）is（your）erease
his book is on the dask．改为一般疑问句
Is his book on the desk?
there are english books．改为单数句
There is an English book.
where are my pencils?将答语补充完整
（They ) （ are ）in (the/someone's) pencil case.
is the baskeetball under your chair做否定回答
No,it isn't.