题目内容：

The little boy entered the house, unhappy. His mother was_______cakes in the kitchen. She smiled as she turned round but_______when she saw his face. Tyler, _______happened? Is everything okay?

"Nothing is okay, Mom," said the boy, "Today, in our science lesson, Mrs. Green was_______ the environment.She said that the whole world is getting dirtier and that many animals and plants are dying. She wants us to think of something we can do to help. I thought all the way home, but there is_______ I can do to make a difference.""Let me tell you_______," the mother said after thinking for a while. One morning a man was walking down a beach. There he saw thousands of dying starfish(海星) covering the beach. They were pushed up by the waves,and it was too _______up for them to make their way back by _______. The man shook his head as he walked along. What a pity! So many starfish will die on the beach. The man felt very sorry _______ those starfish. He went on walking and just at that time he was________to find a boy throwing the starfish back into the sea as________as he could. 'How silly you are! My ________, the man said, ‘There are so many starfish. Can you throw all of them back?’ The boy didn’t stop but kept throwing. '________ 1 cant help them all, I can make a difference to this one,and this one, and this one. said the boy."

Thinking for a moment, the man________to help return the starfish to their home. He smiled and said to himself, 'Sometimes the biggest lesson in life comes from the________ person."

1.A. drinking    B. making    C. selling    D. washing

2.A. stopped    B. stopping    C. stayed    D. staying

3.A. what    B. when    C. where    D. why

4.A. talking to    B. talking with    C. talking at    D. talking about

5.A. something    B. anything    C. everything    D. nothing

6.A. a lie    B. a joke    C. a story    D. a truth

7.A. close    B. high    C. far    D. hot

8.A. himself    B. itself    C. ourselves    D. themselves

9.A. of    B. for    C. from    D. forward

10.A. afraid    B. surprised    C. sad    D. angry

11.A. slow    B. fast    C. soon    D. high

12.A. father    B. mother    C. son    D. daughter

13.A. Or    B. So    C. Because    D. Though

14.A. started    B. continued    C. forgot    D. waited

15.A. shortest    B. tallest    C. smallest    D. biggest