Allen had to call a taxi because the box was () to carry all the way home.

A. cannot hear sounds clearly
B. are poor at remembering and understanding what they have learned
C. are poor at learning things by what they have heard
D. have the habit of learning things by what they have heard of

A. New ways to make a TV program interesting.
B. The importance of television programs to children.
C. Different ways to make childhood dreams come true.
D. The influence of childhood experience on future lives.