DO: expressions

do a favor
perform an act of kindness
do her a favor
I told my friend I would do her a favor and look after her pet...
do business
buy or sell goods or services
doing business
Nice doing business with you!
do exercise
do something that requires physical effort, esp. to improve health or fitness
do some exercise
If you want to do some exercise, try jumping jacks!
do harm
cause damage or problems
did more harm
I spilt coffee all over the table. I tried to clean it up, but I did more harm than good!
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