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Question 1:
"The new employee just made another mistake on his paper work that caused us to be short on our next*^*shipment. I think we better keep closer ....... on him for the time being until we know that he won't make any*^*more mistakes like that again," the receiving department's supervisor told the main boss during a meeting.
A. shadow
B. tabs
C. look
D. microscope

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English Slang Idioms (260) | B2 – Upper-Intermediate