The natural greenhouse effect maintains the Earth’s temperature at a safe level making it (73) ______ for humans and many other life forms to exist.

I was enjoying my book, but I stopped                a programme on TV.

I know you are upset about breaking up with Tom, but there are plenty more

________ to the skin, they eventually got to the station.

Susan was sad because she wasn’t invited to any social events. She felt ____________

Ever since we quarreled in the office, Janice and I have been ____________ enemies.

The small, ______ farms of New England were not appropriate for the Midwest.

The bad weather and a lack of food simply ____________ our problem

As Roger had resigned, the company decided to take no further ____________against him.

The international conference of the Craniological Association has been ____ in Cairo to discuss the revolutionary discovery of Doctor Gonzales from Mexico.

Dry salt lakes _________ 70 kilometers long and 15 kilometers wide lie _________ long dunes __________ crests 20 meters high.

Having made his first film earlier this year, he is____________ starring in a new musical.

My mother had to work 12 hours a day in a factory just to______.

She’s very____________ She can be relied on to do her job properly.

She loves London, ____________ in the spring.

The professor’s ____________ theory is that singing preceded speech.