我国现阶段制定一切方针政策最基本的依据是( )
I ______ two pens, and my brother ______ three.
—Are ______ your cousins? —No. I don’t know ______.
—Let’s watch TV. —Oh, no. It’s ______.
We play ______ basketball every day.
There is ______ “u” and ______ “s” in the word “bus”.