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to make good; to improve
to do often
to be kind to; to treat well; to do well
毎日勉強して、成績を良くした。
She studied every day and improved her grades.
二人で関係を良くしていこう。
Let's work together to improve our relationship.
市長は町のインフラを良くすると言った。
The mayor said he would improve the town's infrastructure.