___are these books?-Sorry,I don't konw.

___are these books?-Sorry,I don't konw. —I don’t konw how to deal with these old books Do you know_____?--sorry ,i don't konw I don't konw I don‘t konw I don't konw . I don't konw CPU I don't konw .中文 -Can you make sure___the books?-Sorry,I don't know. It\'s my fault! I\'m sorry!But I don\'t konw what could do!是 I don't think these books are()for young children Sorry,I don't konw the answer.You get me there的意思