These three teachers vary_____their manners of teaching.

Greatly agitated, I rushed to the apartment and tried the door, （ ） to find it locked.

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

It is her beautiful eyes （ ） attract most of the fans.

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

Some cities have passed laws that allow coal and oil_____only if their sulfur content is low.

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

They are very jealous （ ） his reputation.

Dress warmly, （ ） you will catch cold.

Tom might not have made such a serious mistake if he _____ your advice.

Harmonious marriage, however, does not necessarily （ ） much sharing of interests and responsibilities.

Not until quite recently _____ any idea of what a guided rocket is like.