Измените глагол-сказуемое в предложении, поставив его во все временные формы (простое прошедшее, настоящее длительное, настоящее совершенное времена).
Today most modern inventions take place in large research organizations.

A year ago most modern inventions took place in large research organizations. (took place-простое прошедшее)   Now most modern inventions are taking place in large research orgasnizations. (are taking place-настоящее длительное)     Since 2011 most modern inventions have taken place in large research organizations ( have taken place-настоящее совершённое)

Last year most modern inventions took place in large research organizations.( Past Simple -простое прошедшее) .
At the moment most modern inventions are taking place in large research orgasnizations.( Present Progressive настоящее длительное)
Recently most modern inventions have taken place in large research organizations. ( Present Perfect- настоящее совершённое)