The middle and high school period is a special one for children, a transition from children to adult, ______ children tend to be rebellious.
—John has put forward _______ most challenging question for us to answer. —Yes, it really is. I have never heard _______ harder one.
I often have conversations with John over ______ telephone, while keep in touch with Tom by ______ letter.
The education of ______ young is always ______ hot and serious topic.
Apartments in cities can be quite high. Renters are paying up to $1,000 per month for _______ bedroom apartment.
As _______ unemployment is very high at the moment, it’s very difficult for people to find _______ work.