The glass doors have taken the place of the wooden ones at the entrance,in the natural light during the day.
The doctor has worked with patients of this kind for eight years, so he knows what ________ in his job.
—Who telephoned you just now? — don’t know. I was about to answer the phone when it ________.
He recommended a reporter to us who has ________ outstanding talent for writing and is known for his sympathy for ________ poor.
This printer is of good quality. If it ______ break down within the first year, we would repair it at our expense.
Nobody believed his reason for being absent from the class ______ he had to meet his uncle at the airport.