Because of wireless service costs plummeting in the last year, and as mobile phones are
increasingly common, many people now using their mobile phones to make calls across a
wide region at night and on weekends, when numerous wireless companies provide
unlimited airtime for a relatively small monthly fee.
A. Because of wireless service costs plummeting in the last year, and as mobile
phones are increasingly common, many people
B. As the cost of wireless service plummeted in the last year and as mobile phones
became increasingly common, many people
C. In the last year, with the cost of wireless service plummeting, and mobile phones
have become increasingly common, there are many people
D. With the cost of wireless service plummeting in the last year and mobile phones
becoming increasingly common, many people are
E. While the cost of wireless service has plummeted in the last year and mobile
phones are increasingly common, many people are
Answer:
请问这里答案e ,中的has... in hte last year 为什么对??? 我就使这里觉得要过去时才选了d 的.
这个问题竟然没有人问?? 天那.看来..
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