Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word for each of the blanks from 36 to 40.

Carbon dioxide in the atmosphere, which is primarily a result of mankind's burning of fuels, is thought to act like the glass of a greenhouse. It absorbs heat radiation from the earth and its atmosphere, heats that otherwise would dissipate into space. The possibility that the greenhouse effect could alter the earth's temperature has been debated for many years. Scientists have agreed that carbon dioxide is increasing but there has been uncertainty about whether temperatures are also increasing. The major difficulty in accepting the greenhouse effect has been the absence of observed warming coincident with the historic carbon dioxide increase.

Doubts about the greenhouse effect seem to center on the fact that ______.

Peter: “What________ your flight?”

Mary: “There was a big snowstorm in Birmingham that delayed a lot of flights.”

During the campaign when Lincoln was first a(n)________ for the Presidency, the slaves on the far-off plantations, miles from any railroad or large city or daily newspaper, knew what the issues involved were.

By appearing on the soap powder commercials, she became a ________ name.

When the Titanic started sinking, the passengers were________.

Da Vinci’s Mona Lisa is _____; if it was destroyed no amount of money could ever replace it.

The elaborate bridal costumes of the coastal Indians are ____ from mother to daughter.

As the years passed, Joe’s memories of his terrible experience _____ away, and he began to lead a normal life again.

It is said that a drizzle on the Phap Van - Cau Gie Expressway caused poor______ and slippery road surface, leading to the vehicles, traveling at high speed, unable to respond safely.

I was very sad when the vet said he'd have to ________ Gertie, our lapdog.

You're 18! You ________ to be able to look after yourself by now.