What is dangerous about heart disease is its lack of _____ symptoms. In many cases, the disease is not detected until a fatal heart attack.

Organizers expect that it will take approximately one year to _____ a large enough group of volunteers into the study.

The heavy storm swept across the island and left damage ______.

How ______ did I feel when I learned that I had to conduct the experiment again due to my carelessness.

The hotel industry is likely to be one of the last sectors to recover given people’s _____ to travel combined with a drop in income during the pandemic.

The firefighters were highly ______ for their bravery in saving the residents from the raging forest fire.

What indeed singled out these teachers was a vividness of personality, a cheerful ______ enthusiasm and an unusual amount of energy and commitment.

The speaker began by _____ a story of a recent graduate who volunteered to teach in a remote village.

As the economy _____ into the deepest recession in decades, many warned that the unemployment rate would hit 20 percent by summer.

The construction of the building was going to take two years, but we were ___ ，and it appeared we would finish on schedule.

When you learn how to behave ____, you grow up.

All human neurons in resting state have an electronic ____ of –40 millivolts. 

The child, who took a ____ interpretation of “mountain climbing”, got down on all fours as soon as the family reached the foot of the hill.

There is a common understanding that romance should be something _____. It seems somehow unromantic to plan for feelings.

Think of your cover letter as a tool to let your potential employer know why they should hire you and why you would be an ____ to the company.

Fear produces an _____change in heart rate, a narrowed, attentive focus, and the urge to act or to escape.

 Henry played an _____ role in shaping my view of the world. He told me that I had the freedom to achieve whatever I set my heart on.

All that is required to allow the most experienced pilots to take off or land is a _____ of flat ground a few hundred meters long and a few dozen meters wide.

If we continue to _____ the Earth’s natural resources, we will soon be faced with serious shortages of water and energy.

Volunteer work helps to promote friendship and _____ a sense of community in the neighborhood.

Some feminists think that prejudices against women are ____ in the English language, as evidenced in words such as mankind, etc.

The influence of the media on the public, hard to ___ though it is, can never be exaggerated.

 The Chinese Football ___ has a major program where talented players get to train in Europe.

The contract makes it clear that the benefits of the project will ____ to all parties which share its risks and costs.

In Florida, where 1.8 million workers have applied for jobless benefits since mid-March, job openings aren’t ____, either.

The world needs young people today with ___ and courage to help build a better place for humanity.

A person has to strike out on his own if he wants to ____ in life.

He has started to ____ an aged, worn-out look in recent years.

Bonus payments provide an ____to work harder.

The two friends neither saw each other nor communicated in any ____ for the next four years.

He was unhappy with the commercial ____ of the organization.

The newspaper claims that it pursues an independent policy and is not ___ in favor of any political party.

Cycling is highly beneficial to health and the environment.

I could not leave his question unanswered because my honor is ____.

How can we carry on a centuries-old tradition and ____ modern technology at the same time?

The surprise attack caught the enemy off guard and ____ our victory.