(   ) 1. Since then，they have launched a great         to make the beaches safer for swimmers and tourists.

A. campaign B. revolution C. competition    D. organization

30.                  if you can do me a favor. (appreciate)

要是你能帮我个忙，我会很感激的。

29. We all find it important          a quick decision about this matter. (make)

我们都认为对这件事立刻做出决定很重要。

28.                that I had ever seen him before. (occur)

我突然想起我以前见过他。

27.                      that I had been away when he called. (happen)

他打电话时，我正好不在家。

26. It seems to me                   this huge mistake. (responsible)

对于我来说，似乎我们应该对这个重大的错误负责。

25.                     that Americans like to eat meat a lot. (know)

众所周知，美国人很喜欢吃肉。

24.                   is still a problem. ( support)

他们是否会支持我们仍是个问题。

23.Jim，look！It seems                  . (look)

看，Jim,好像有人在找你。

22.You can，t imagine                  when they received these nice Christmas presents. (excite)

你无法想象当他们收到这些漂亮的圣诞礼物时是多么的兴奋。