把下列句子改成复数
问题描述：
把下列句子改成复数
The leaf is turning yellow.
Which is your pen?
What is this?
Who is he?
Look at that book.
There is an apple on the desk.
It is a lovely dog.
Show me your book.
最好在今天说！谢谢啦！
答
The leaves are turning yellow. Which are your pens? What are these? Who are they? Look at those books. There are apples on the desk. These are lovely dogs. Show us your books.