To her joy,Della earned first the trust of her students and      of her collegues.

Although Rosemary had suffered from a serious illness for years, she lost______ of her enthusiasm for life.

There are a small number of people involved, possibly ______twenty.

_______ can be good at something for 40 years if he doesn’t love it.

I’ve lived in New York and Chicago, but don’t like ____ of them very much.

This project requires close teamwork.   Will be achieved unless we work well together.

It's an either-or situation - we can Buy a new car this year or we can go on holiday But we can’t do     .

It is so difficult a problem that ____ student in this class ____ work it out.

It was probably at that moment _____ I understood what kindness really was.

Clothing made of man-made materials has advantage over _______ made of natural ones like cotton, wool or silk.