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Here's some useful information about travel in Canada.
a useful tool/technique/gadget
Her book is a useful contribution to our understanding of how Mozart worked.
I was useful to them because I could speak French.
That basket would be useful for picnics.
Old pictures are useful for seeing how people used to dress.
Thanks. It's useful to know that.
Would it be useful for you to ask us some questions?
This is the American English definition of useful. View British English definition of useful.
to learn small pieces of information by asking questions or watching or listening carefully
… the decision to treat the rights and duties of a company as being the same as the rights and duties of its shareholdersadd a word
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