Ⅰ．单词拼写
1．How can you go to the party without an ________(邀请)?
2．A dinner party will be ________(组织)to celebrate my mother’s eightieth birthday.
3．The professor will give a lecture on the ________(话题) of environment protection.
4．Five ________(参赛者) were awarded at the end of the match.
5．The students’ ________(参与) in class is an important element of a good lesson.
