用所给单词的适当形式填空。

1．Xiao Hua，did you watch the ________（excite）baseball match held in our city in April?

2．Our physics teacher told us that light ________（travel）much faster and sound．

3．October 1st，2009 is the ________（sixty）birthday of the People's Republic of China．

4．Liu Qian is successful now，but do you know that he learned magic all by ________（he）?

5．People are glad to see more and more tall ________（build）in Panzhihua in the recent years．

6．Don't give up．You'll have fun ________（learn）English．