题目内容

Online ______ is growing fast as physical stores close down.

A. retail
B. retailer
C. retailing
D. retailers

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________ of the new machine will start next month.

A. Product
B. Produce
C. Producing
D. Production

The worker oils the machine to operate it more ______.

A. efficient
B. efficiently
C. effective
D. effectively

He failed completely in the ______ of his duty.

A. performance
B. perform
C. performancy
D. performances

______ are a regular (usu. weekly) payment made or received for work or services.

A. Sarlaries
B. Pays
C. Fees
D. Wages

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