His book is on the desk.(改为一般疑问句）
问题描述：
His book is on the desk.(改为一般疑问句）
These are English books.(改为单数句）
Where are my pencils?＿ ＿in your pencil box.（将答语补充完整）
IS the baseball under your chair?(作否定句回答）
答
你好;
1 Ishis bookonthedesk?
2 This isanEnglishbook.
3 ( They ) ( are )inyourpencil box.
4 No, itisn't.