They had known each other only during their two high school years.

If so, will you let me know during the next few days.

She spent 1911-1914 in America, though nothing is known of her activities during those years.

His family was known for its success during the late 19th century.

She is well known for her work in television during the 1980s.

However, he became best known during this period as a director.

However, little is known about his training and work during this period.

Not much is known as yet about the company's role during this war.

The men said they first got to know each other during their trial.

We know very little about the country during the early modern period.