在下列各句的每个空格内填上一个适当的、完整的单词，该词的首字母已给。 1. He
题型：填空题
问题：
在下列各句的每个空格内填上一个适当的、完整的单词，该词的首字母已给。
1. He's unhappy because of his little dog's d__________.
2. The reason why he was away was not m__________ in the text.
3. We must keep the s between you and me. Don't let others know them.
4. Paris is one of the l__________ cities in Europe.
5. Students are often a__________ while having classes in the hot afternoon