Elija la opción correcta. Simple past o present perfect    

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Last year I in New York.
He for ten minutes now.
They to buy a car since 1998.
She a good price for your house last week.
You your uncle when you were small.
The instruction for my washing machine everything in detail.
He flowers, they are now on the table.
She dinner, while he worked on a presentation.
This evening he dinner.
The modern mobile phone a help for many of us, as well as a curse
(curse = maldición).

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