You go to the railway station to meet one of your friends, and the train has not arrived yet, so you have to leave him a note on the clipboard, from which he will learn how to find you.

A．cannot be read to children without variation because they find no pleasure in it
B．will be more effective if it is adapted by parents
C．must be made easy so that children can read it on their own
D．is no longer needed in developing children’s power of memory

A．He was delighted to show them off.
B．He did his best but was not often successful.
C．He did them quickly to get them over.
D．He had few opportunities to do them.