The two most important ________ in making a cake are flour and sugar .

The ______ of medical knowledge are being pushed farther outwards as time

Goes on.

What the correspondent sent us is an ________ news report. We can depend on it

Any earthquake that takes place in any area is certainly regarded as a kind of a(n) __________event.

Studying in a quiet room is __________ to learning; studying in a noisy environment makes learning more difficult.

Many kinds of animals are believed to have _________ from the earth.

The government will __________ a new campaign to promote recycling.

The man is surely a ___________ to society. Every one of us believes that he should be locked away immediately.

You may change the monitor location or tilt it to eliminate __________ from lights or windows.

The storm __________ the children, who huddled together for comfort.

He wouldn't answer the reporters' questions, nor would he __________ for a photograph.

Courses are typically taken entirely online, though some schools do require students to make a(n) __________ appearance on campus, for example every few weeks.