As teachers, we feel         our duty to teach our children to be good wherever we are.

—Do you have a small mouth?—No, I don’t. I have a wide ____.

I admired his paintings, and Ted said he would like me to have ________ as a gift from him.

—Which of those electronic dictionaries do you like most?—     .They are expensive and of little use.

The companies are working together to create _____ they hope will be the best means of transport in the 21st century.