— We can sell the waste for recycling such as glass, paper and metal.— ____
David visited lots of _______ in the world.
The story is ________ and all of us are _______ in it.
Pens are used to write ______and paper is used to write ______.
I didn’t know ______.
–Is that Kate’s car? --It ______be hers. She has just gone for a meeting.