问题详情：
用括号内所给单词的适当形式填空。
1．k felt much ________(sad) when he heard the news.
2．These emails were not ________(delete) them.
3．Frank is looking forward to ________(play) a part in the school sports meeting.
4．We were ________(surprise) to know that he was from a foreign country.
5．It is one of the most important ________(event) in the history of China.
【回答】
er ted ing rised ts
知识点：构词法
题型：完成句子
