23. He is always full of ______ as if he never knew tiredness.
—John has put forward ________ most challenging question for us to answer. —Yes,it really is.I have never heard ________ harder one.
The education of ________ young is always ________ hot and serious topic.
As ________ unemployment is very high at the moment,it's very difficult for people to find ________ work.
The operation is ________ success and the patient is now out of ________ danger.
—Have you seen ________ pen?I left it here this morning. —Is it ________ black one?I found it in the corner.