Ⅰ.单句语法填空
1．China is wealthier and ________ (power) than ever before.
2．We need to examine all the costs ________ (involve) in the project first.
3．My leg is giving me much less pain but still ________ (ache) when I sit down.
4．Thank you for ________ (persuade) my mother to let me join the army.
5．It has been an ________ (inspire) experience because of you.
6．Both the Winter and the Summer Olympics are held every four years ________ a regular basis.
