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Idioms and Phrases with make demands on

make demands on

Urgently require something of someone, as in Her mother's illness has made considerable demands on her time. [Late 1300s]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.