决定二月考试

If you skip as many as...and compared...

 you can find that carry ...and cost less ,get better,allow and have... are perfectly paralleled. All others are not as good as A.

Pay attention on the key words.

谢谢ls，这是道争议题，后来在语法讨论中找到了！~

最近要考试了，都没发贴了，呵呵！~