(   ) 3. [2015.株洲]December is       and last month of the year.

   A. the twelfth   B. twelfth

   C. the twelve

(   ) 2. [2015 • 长沙]It's necessary for us        to our parents when we have problems.

   A. to talk   B. talking

   C. talk

(   ) 1. [2015 •成都] —Lin Dan won the badmin?ton game again.

―Yes,I think no one can do        than him.

   A. well   B. better

   C. best

10. 你们将废物分成要回收的和需丟弃的吗？ 

Do you divide the waste into things to        and things to                ？

9. 谈论我们不能做的事情是没有用的。

It's no use                the things we can't do.

8. 环保课结束后，我担心我们的将来。

After our lesson        the        ，I'm                the future.

7. 抱最好的希望，做最坏的准备。

                the best and prepare for the worst.

6. 政府应当采取措施保护留守儿童。

The government should                      protect the left-behind children.

5. 在你充分利用这些东西之前，不要丢弃它们。

Don't                 these things        you have made full use of them.

4. 你知道吗？野蚕可以入药。

Do you know that? The wild silkworms            used as medicine.