In our opinion, teaching a foreign language is science.
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.
—What do you think of Tom? —He has been working very hard. ______ he is an advanced worker.