按要求改写句子。
(1)What is this ?(改为复数句)
What _______ ________?
(2)What are those? (改为单数句)
What _______ _______.
(3)They are pears.(改为一般疑问句)
_______ they pears?
按要求改写句子。
(1)What is this ?(改为复数句)
What _______ ________?
(2)What are those? (改为单数句)
What _______ _______.
(3)They are pears.(改为一般疑问句)
_______ they pears?