We live in an age _________ more information is available with greater ease than ever before.
| A．why | B．on which |
| C．to whom | D．when |
The telephone system _________ during the big earthquake in Sichuan Province.
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It was such an __________ performance that it ___________ all the audience.
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This picture was taken a long time ago. I wonder if you can __________ my father.
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I saw Bob play the piano at John’s party and on that __________ he was simply brilliant.
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It is considered no use _________ against the deadly disease.
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