搜题

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第1题

They can repeatedly watch the videos and take the quizzes ______they want.

A、however
B、whatever
C、whenever
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第2题

In the past, it used to bevery difficult to start a business, because of the ____ of capital and business information.
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第3题

The Internet really makes our life convenient and we can learn __________.

A、anytime and anywhere
B、sometime
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第4题

For the last hundred years, the U.S.A. has played ______ in most parts of the world.

A、a key actor
B、an impor
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