Verb conjugation of "reagire" in Italian

Dear Maximilian, I look forward to your visit in Switzerland. After a somewhat difficult start, it seems that we have increased the website traffic and we are starting to receive more visitors.
Press the start button in the green box to initiate the verb drills. Please note that you can choose which tenses will be asked but I think that leaving it as it is will be the most efficient in the long term. Be patient and learn steadily.
Is that your voice in the background of the video? Thanks to your machine which stood outside, the tree did not fall on the man... This is just unbelievable! And you filmed it all?