проводились

проводились

"Were conducted" or "were carried out."

Here, 'проводились' is used to describe events or activities that were organized and took place in the past.

В прошлом году в нашей школе проводились спортивные соревнования.

Last year, sports competitions were held at our school.

In this usage, 'проводились' indicates that certain events or activities were arranged or executed, specifying their nature.

На этой выставке проводились увлекательные экскурсии для детей.

At this exhibition, engaging tours for children were conducted.

Here, 'проводились' refers to the execution or implementation of systematic activities (experiments) related to research.

В рамках исследования проводились многочисленные эксперименты.

In the course of the study, numerous experiments were conducted.