All people,they are old or young, rich or poor, have been trying their best to help those in need since the disaster.
—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.
One is expected to behave _________ on some special occasions.