Most ethnic groups in Vetnam have their own costumes that reflect their unique culture identities.

The use of lasers in surgery has become relatively commonplace in recent years.

He drove so fast that I really felt my life was in danger.

The first few days at university can be very daunting, but with determination and positive attitude, freshmen will soon fit in with the new environment.

The fer-de-lance, a kind of viper, is one of the most poisonous snakes.

In times of war, the Red Cross is dedicated to reducing the sufferings of wounded soldiers, civilians, and prisoners of war.

Did anyone acknowledge responsibility for the outbreak of the fire?

Many scientists agree that global warming poses great threats to all species on Earth.

Now I understand why you moved out of that house.

In my experience, freshmen today are different from those I knew 25 years ago.

Dozens of applicants showed up for the vacant position, but only a handful of them were shortlisted for the interview.

The teacher gave some suggestions on what could come out for the examination.

Scientists warn of the impending extinction of many species of plants and animals.

If you do not understand the word "superstitious", look it up in the dictionary.

Once in a while I visit my grandparents on the farm and stay there for some days.

Nobody knows the origin of the Vietnamese long dress. There was no evidence about where and when it appeared.

He’s really delighted with his success.

He insisted on listening to the entire story.

When we went to the airport to see her off, we had a traffic jam.

Reaching 35 and obviously aging, Jane has to make up her mind on her future very soon.

The activists were accused of contaminating the minds of our young people.

A.      B. 

C.      D.