----动词填空,用括号内动词的是当时态和语态填空

----动词填空,用括号内动词的是当时态和语态填空
（每空词数不限,注意写出完整答案）
1.-Bird flu is still very serious in some counties.
-Yes,something must ___(do) to stop it from spreading.
2.-It is reported that a big earthquake ___ (hit) Indonesia on May 27.
3.-I hear that two children`s fun parks ___ (build) last year in our city.
-I know,but i think two are not enough.
4.-Which team do you think ___ (be) the winner of the 2006 World Cup?
-I am not sure.Maybe Brazil again.
5.Great changes have already taken place in Yancheng.A second expressway(高速公路)___ (build) though the city a few years after the first one was done.
6.Long ago,Korean people ___ (not own) their letters.