My wife's flight had just landed when I arrived at the airport. She....................... gone for three weeks.

University is much easier for a student ...... speaks English.

The box...... from recycled paper.

People over forty need .................. regular check-ups at least once a year.

I need to conduct some research for my marketing course. ........... author’s books would you recommend?

The security guard ...... works in our college is really nice.