题目内容

Since the beginning of 2013, these regulations in most workplaces across thecountry（）

A） will be introduced
B） are introduced
C） have been introduced
D） were introduced

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One of the toughest jobs of managers and executives is how to engage their employees（）

A to figure out
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C figure out
D figured out

they are invented to be very smart, robots still can’t replace humans（）

A If only
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A） there are
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C） there is
D） is there

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A sparing
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C spare
D spared