–Are these your rulers? – Yes, ________.

—The books are so nice, which one can I take? —Oh, you can take _______ of them. I’ll keep none.  

New technologies have made ____ possible to turn out new products faster and at a lower cost.

There are many tall trees on _______ side of the road.

— How pleasant 　　　 is to go fishing with my father! — Yes. Parents and children should spend more time together.