Johnny, where's your homework?" Miss Martin said  sternly  to the little boy while holding out her hand.

　　"My cat ate it," was his  solemn  response.

　　"Johnny, I've been a teacher for eighteen years. Do you really expect me to believe that?"

　　"It's true, Miss Martin, I swear," insisted Johnny. "I had to force him, but he ate it!

Key words：

stern　（adj.）嚴竣的　　click 發音 

solemn　（adj.）一本正經的　click 發音 

force　（v.）強迫