Student A: I am terribly sorry because I left your dictionary in the library and I just couldn’t find it there.
Student B:（）I have a new one.

A．a modern computer won’t be down
B．computers can take the place of humans
C．there will be great changes in computers
D．sometimes a computer may bring suffering to people

A．latchkey children enjoy having such a large amount of time alone
B．latchkey children try to hide their feeling
C．latchkey children often watch TV with their parents
D．it’s difficult to find out how many latchkey children there are