Prices of mobile phones _____ through a computer can be lower than prices in pub
题型：专项题难度：来源：
| Prices of mobile phones _____ through a computer can be lower than prices in public market. |
| [ ] |
A. are bought
B. bought
C. been bought
D. buying |
答案
| B |
举一反三
| You"d better keep us ______of any change of the address as soon as possible. |
| [ ] |
A. informed
B. informing
C. inform
D. toinform |
| When _____ why he went there,he said he was sent there to be trained for a space flight. |
| [ ] |
A. asking
B. being asked
C. to ask
D. asked |
| Statistics show a 20% reduction in burglary _____with last year. |
| [ ] |
A. compared
B. comparing
C. having compared
D. having been compared |
| As far as I"m concerned,the decision________at will play an important part. |
| [ ] |
A. arrive
B. arriving
C. have arrive
D. arrived |
| _________from the top of the tower,the south foot of the mountain is a sea of trees. |
| [ ] |
A. Seen
B. Seeing
C. Having seen
D. To see |
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