题目内容

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

A to figure out
B to be figuring out
C figure out
D figured out

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

A If only
B Even though
C As if
D Just as

Do you have any idea about how many companies in the office building（）

A） there are
B） are there
C） there is
D） is there

Generally speaking, you should arrive at the airport with plenty of time（）

A sparing
B to spare
C spare
D spared

Do you think the new engineer can help me my operating skills（）

A. improves
B. improved
C. improve
D. has improved