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  • Due to the high volume of foot traffic, the shop must polish its floors more _____ than usual during the peak season.
Question 1:
Due to the high volume of foot traffic, the shop must polish its floors more _____ than usual during the peak season.
A. frequent
B. frequented
C. frequency
D. frequently
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An adverb is needed to modify the verb "polish" 
=> Choose D

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