It is very common for new students to give up after about three months.

And it's very common for only one book to do well.

Recently, it has become common for nearly half a family's income to be spent on the child.

It is very common for line and staff workers to come into conflict.

It has been quite common in London for nearly 10 years.

It is common for them to grow more, so the number changes often.

It was common for one performance to take place every week.

It is common for arms and legs to move together.

During the 1980s it was common for an individual to be the only black professional working in their company.