In order to _____ the rising production costs, the subscription rates have been increased.
| A．add up to | B．look up to | C．cut short | D．keep up with |
—Who telephoned you just now?
— don’t know. I was about to answer the phone when it ________.
| A．rang up | B．rang off | C．hung on | D．rang back |
He recommended a reporter to us who has ________ outstanding talent for writing and is known for his sympathy for ________ poor.
| A．an; the | B．an; 不填 | C．不填；不填 | D．the；the |
This printer is of good quality. If it ______ break down within the first year, we would repair it at our expense.
| A．should | B．would | C．could | D．might |
Nobody believed his reason for being absent from the class ______ he had to meet his uncle at the airport.
| A．why | B．because | C．where | D．that |
One is expected to behave _________ on some special occasions.
| A．accurately | B．precisely | C．appropriately | D．rightly |