Past modals and phrasal modals of ability and obligation
Help
Continuously ignoring the small leaks in the roof can "aggravate a problem", leading to extensive water damage in the house.
make worse
Regular maintenance helps to "avoid a problem" before it escalates into a costly repair.
not do anything
Leaving the windows open during a storm can "cause a problem" by allowing rainwater to damage the interior of the house.
make
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