完成句子。（每小题1分，共9分）
The ________________________(develop) of science has changed our life a lot.
Listening to a talk is ___________________ (please). We all feel bored.
Most of the visitors got lost in the ___________________(beautiful) of Tianmu Lake.
It’s __________________(use) to talk so much if you don’t match your words with actions.
All of us were excited at those ________________ (perform) performance.
Thousands of_____________________(tour) come to visit our city every day.
It’s his _________________(five) day in Guiling.
You are great. You have worked out the problem _________________.(success)
It’s over three years since I ________________(come) back form Beijing.