________ of the swamps have become ________.

[　　]

A. Any, pollute

B. Some, pollution

C. Some, polluted

D. Any, polluted

根据图画及上下文提示，在下面对话的空白处填入适当的话语（话语可以是句子、短语或词），使对话完整。

A：Hey, Ginny．What do you call those big，gray things in the water?

　　B：__1__．

　　A：What?

　　B：Manatees。They’re very gentle and very shy．

　　A：__2__？

　　B：They’re usually about 10 feet long and they weigh about 1000 pounds．

　　A：How much do they need everyday?

　　B：They need about 1 00 pounds of aquatic food a day．

　　A：__3__?

　　B：It is underwater plants and vegetation（植被）．

　　A：That’s what they eat?

　　B：Yes．it is．

　　A：__4__?

　　B：Yes，they are endangered（陷入困境）．But，we’re trying to save them

　　A：Wait a moment．Why are they endangered?

　　B：__5_．

　　A：Where do they live?

　　B：They live in the swamps（沼泽）．__6__ ．They are endangered also because there sometimes isn’t enough food for all of them．

　　A：__7__．There used to be a lot of manatees，but now there aren’t very many of them left，I think．

　　B：Yes，__8__ ．At this point，there are only about 2，500 in the U．S．

　　A：__9__?

　　B：Since 1927 laws have been passed to protect them．

　　A：Thank you for your information．

B：__10__．

________ of the swamps have become ________.

[　　]

A. Any, pollute

B. Some, pollution

C. Some, polluted

D. Any, polluted