Choose the correct answer to complete the sentence. "The ______ way to do this was to expose the food to sun and wind"

Nam was playing football, _    ?

Choose the correct answer to complete the sentence. "In order to prevent darkening, pears, peaches and apricots are ________ to the fumes of burning sulphur before drying"

Why did all the customers at the Red Lion have to pay off pay off their beer that week?

No one is better at English than Lan, _    ?

Choose the correct answer to complete the sentence. " Carbon dioxide is one ---- the primary greenhouse gases that cause global warming."

Would you show me ................... shortest way to …………. airport 

The teacher decided to fail the student with the grounds of his poor performance in tests and too small progress

Archeological studies have provided evidence that the use of plants for decoration as well as for food developed early in the history.

Choose the correct answer to complete the sentence. "Deforestation is one of the _____ environmental threats to the ecological balance in the world"

To survive , most birds must eat at least half their own weigh in food every day

The ozone layer must be protected because it shields the Earth from excessive ultraviolet radiations

Choose the correct answer to complete the sentence. "Scientists predict that by 2030, the rainforest will have ______ smaller by 40%. "

One responsibility of human beings is not to interfere with the actions of another people except in the face of injustice

If it is kept dry, a seed can still sprout up to forty years after their formation

The police officer lectured the children for ten minutes about the dangers to throw stones, but then let them off with  warning.

In England as early as the twelfth century, young boys enjoyed to play football.

George Washington, his portrait appears on the quarter coin and the dollar bill, served two terms as president.

Choose the correct answer to complete the sentence. "Climate change leads _____ numerous catastrophic consequences"

One of the four underlined parts marked A, B, C, D in each sentence is not correct in standard English. Identify them: 

If we continue to use fuels at the current rate, we would soon have to face a fuel crisis. 

The Gray Wolf, a species reintroduced into their native habitat in Yellowstone National Park, has begun to breed naturally there.