To tell you the truth, it’ s very hard for us to help them get rid of Internet addiction. But we ______ on this problem trying t

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问题 To tell you the truth, it’ s very hard for us to help them get rid of Internet addiction. But we ______ on this problem trying to improve the situation.

选项 A、worked
B、had worked
C、are working
D、had been working

答案C

解析根据语境意义，我们可知这个动作正在进行中，因此用现在进行时。

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本试题收录于：大学英语三级A级题库大学英语三级分类

大学英语三级A级

大学英语三级

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To tell you the truth, it’ s very hard for us to help them get rid of Internet addiction. But we ______ on this problem trying t

大学英语三级A级

大学英语三级

Whatdoesthepassagetalkabout?Ittalksaboutthechangesin______.

A——InternetKeyExchangeB——VirtualPrivateNetworkC——SingleUserAccountD——RequestToSendE——LocalArea

A——InternetKeyExchangeB——VirtualPrivateNetworkC——SingleUserAccountD——RequestToSendE——LocalArea

LearninghowtousetheInternet(effective)______isveryimportantforthestudentstoday.

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"Avoidtherush-hour"mustbethesloganoflargecitiesallovertheworld.Wheneveryoulook,it’speople,people,people.The

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