GWD-9-Q3:Because ofwireless service costs plummeting in the last year, and as mobile phones areincreasingly common, many people now using their mobile phones to makecalls across a wide region at night and on weekends, when numerous wirelesscompanies provide unlimited airtime for a relatively small monthly fee.
- Because of wireless service costs plummeting in the last year, and as mobile phones are increasingly common, many people
As the cost of wireless service plummeted in the last year and as mobile phones became increasingly common, many people
In the last year, with the cost of wireless service plummeting, and mobile phones have become increasingly common, there are many people
With the cost of wireless service plummeting in the last year and mobile phones becoming increasingly common, many people are
While the cost of wireless service has plummeted in the last year and mobile phones are increasingly common, many people are
答案是E，我选的是D, 感觉E中一个while, 一个when, 有些重复，另外while 在这里是表示当....时候么？
请问D项具体错在哪里？
谢谢！！ | 
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发表于 2010-10-19 11:04:03
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