Choose the correct answer to complete the sentence. "It's possible that by the end of the 21st century, the rainforest will have _______ disappeared"

The purpose of traveler’s checks is to protect travelers from theft and accidental lost of money.

When my lost briefcase was returned with my year-long research results intact, I felt tremendously relieved. It was as if a huge heavy weight ______________ from my shoulders. 

No matter what different, various music types have one thing in common: touching the hearts of the listeners.

Some birds can travel at speeds approaching one hundred miles an hour, and a few land animals can so.

The first vaccine ever developed was used to combat and fight a smallpox, a disease resulting from infection by a virus.

There are only ...........few seats left for …………… tonight's musical at ...........university. 

The dentist gave me a check-up and then telling me I needed two teeth.

Chicago’s Sears Tower, now the taller building in the world, rises 1,522 feet from the ground to the top of its antenna.

Not everyone believes that ..................technology has improved .................. quality of people's lives. 

If the lecture ____ so quickly, we’d have understood his speech.

Lan never goes out at night,  _    ?

In pools, goldfish are not just ornamental; since they feed on mosquito larva, they are also benefit.

Pop Art was a movement of the 1950’s and 1960’s whom imagery was based on readily recognized American products and people.

Since the Great Depression of the 1930’s, social programs such as Social Security have been built into the economy to help avert severity business declines

The need for a well-rounded education was an idea espoused by the Greeks in time of Socrates.

Numerous types of cells, such as skin cells and white blood cells, have the power reproduce asexually.

Colleges in the newly formed United States, in recovering from the adverse effects of the American Revolution, inaugurated a broad curriculum in response of social demands.

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

Light can travel from the Sun to the Earth in eight minute and twenty seconds.

Choose the best option:

The problems of pollution call for a prompt ___ from the government.