In North America, most students go to school_____ the school bus.[ ]

______ are you staying there? —For about 3 days. I don’t like to be away for too long. [ ]

Is this your book, Alice? —Yes, it is ____ book. Thank you.

This picture was taken a long time ago. I wonder if you can 　　　 my mother.

The box is ________ heavy ________ I can’t lift it.