Two little girls，14-year-old Cindy and 12-year-old Lucy，wrote to a newspaper office，asking some fast food restaurants to stop giving away free plastic（塑料） toys.Many people read the letter and supported them.

   "We have been learning all about the environment at school and the problem of plastic.It made us very sad to see how plastic harms wildlife and pollutes the ocean，and we want to change this.

   "That's why we want the fast food restaurants to think of the environment and stop giving away plastic toys with their kids meals." the two girls wrote in their letter.

   "We like to go to eat in fast food restaurants，but children only play with the plastic toys they give us for a few minutes before they get thrown away.In the end， theywill harm animals and pollute the sea.We want anything they give us to be sustainable （可持续发展的），so we can protect the earth for us and for future humans，" they continued.

   The letter made a large number of readers pay attention to them.The number of people who supported them almost doubled after reporters followed the two little girls.

   Since the little girls' story started being picked up by news reporters，the fast food restaurants had to give a reply to the newspaper office，telling about their plans for making their free toys more sustainable.

（1）The two little girls wrote to the newspaper office in order to 　    　.

A．	get some fast food
B．	get some free presents
C．	stop children having junk food
D．	stop fast food restaurants giving away plastic toys

（2）Where do the two girls learn about the environment？ 　    　

A．	At home.
B．	At school.
C．	In a restaurant.
D．	In a library.

（3）The underlined word "they" in Paragraph 3 refers to（指） 　    　in the passage.

A．	fast food restaurants
B．	fast food
C．	plastic toys
D．	waste water

（4）What may fast food restaurants most probably do to deal with free plastic toys？ 　    　

A．	They may stop giving away free plastic toys.
B．	They may make free toys with paper and cloth.
C．	They may sell their plastic toys to other countries.
D．	They may make free plastic toys more sustainable.