按要求改写句子
That is an English book．（对划线部分提问）
______ ______ in English?    
The is an orange．（改为复数句子）
______ ______ oranges．
His backpack is on the chair．（对划线部分提问）
______ ______ his backpack?
He has a tennis racket．（改为--般疑问句）
__________ he __________a tennis racket?
--Are those your sisters?（作否定回答）
--No．______ ______