He was asked to account for his presence at the scene of crime.

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

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

The related publications are far too numerous to list individually.

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

Sports and festivals form an integral part of every human society.

The shop assistant was totally bewildered by the customer’s behavior.

In the United States, a party can nominate a single candidate for office.

The aircraft carrier is indispensable in naval operations against sea or shore based enemies.

John was not promoted because his work did not meet the manager's expectations.

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

Childbearing is the women's most wonderful role.

In daily communication, you should know how to interpret other people’s body language.

The 1908 Siberian meteorite explosion brought about considerable depletion of the northern hemisphere's ozone layer.

Many doctors are still general practitioners, but the tendency is toward specialization in medicine.

We watched as the plane disappeared behind the clouds.

The situation seems to be changing minute by minute.

The journalist refused to disclose the sourse of his information.

He’s really delighted with his success.

The shop assistant was totally bewildered by the customer’s behavior.

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