These three teachers vary_____their manners of teaching.

Education cannot be （ ） in any country.

He criticized everything and everybody, and even _____ his few friends.

No sooner had he sat down to lunch （ ） there was a knock at the door.

At the 60th anniversary, the guests sitting in the front are those ______ graduates from the university.

—Do you like the material? —Yes, it （ ） very soft.

The manager urged his staff not to （ ） the precious opportunity.

Once you arrive in a new place, you’d better （ ） the local custom.

The degree （ ） you maintain your mental health may depend on certain simple environmental factors.

（ ） my delight, our school football team won the game easily.

It was in Johnson’s hotel （ ） the business meeting was held last year.

Ten minutes _____ an hour when one is expecting a phone call.