But to mark the tests, they have to use an answer key sent down from the States.
不过为了给测试判分，他们使用的是从美国发来的答案。
Rewrite the sentences in the answer key using a present participle.
用现在分词短语改写上面的句子。
Rewrite the sentences in the answer key using a present participle .
用现在分词短语改写上面的句子。
This presentation will examine various IPTV worldwide deployments and seek to answer key factors for success relevant to China's still nascent pay TV market.
这个专题研讨小组将会仔细观察各种类型的IPTV全球部署，并且探寻中国刚刚起步的付费电视市场成功的关键因素。
This presentation will examine various IPTV worldwide deployments and seek to answer key factors for success relevant to China's still nascent pay TV market.
这个专题研讨小组将会仔细观察各种类型的IPTV全球部署，并且探寻中国刚刚起步的付费电视市场成功的关键因素。
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