_______ from father to son, the music has not changed for centuries.
| A．Passing | B．Passed | C．Having passed | D．To pass |
Poor as she was, she was eager for attention. Thus she had to think of borrowing some jewels to ______ at the party.
| A．show up | B．show out | C．show in | D．show off |
A ______ identification card is required when you purchase foreign money from the Bank of China.
| A．valid | B．perfect | C．beneficial | D．flexible |
It ______ me all of a sudden that I had left my key to the car in the office.
| A．thought | B．struck | C．happened | D．occurred |
______ there are living creatures in the outer space as those on Earth hasn’t been proved so far.
| A．When | B．How | C．If | D．Whether |
______ earlier online survey showed that ______ majority of Chinese believe Yuan Longping deserves a Nobel Peace Prize for his contribution to fighting against world hunger.
| A．An; the | B．The; a | C．An; / | D．The; the |