问题描述：
2．They have found the lost books already．（改为一般疑问句,并作否定回答） ______ they _______ the
2．They have found the lost books already．（改为一般疑问句，并作否定回答）
______ they _______ the lost books _______？No，they________．
2．They have found the lost books already．（改为一般疑问句，并作否定回答）
______ they _______ the lost books _______？No，they________．
问题解答：
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