Как поставить глагол в правильную форму

Сначало определи время глагола а потом уже форму:

Определить время и поставить в нужную форму..

Up until 1999, the festival 1) had been held in the town of reading, a half-hour train journey from london. however, an ever increasing demand for tickets 2) led the organisers to establish a sister festival in the northern city of leeds. since then, the carling weekend 3) has become a phenomenal success, with a total of over 150,000 tickets sold each year.every year, the festival gates open for the august bank holiday weekend, 4) giving fans the chance to enjoy an exciting 3-day camping experience. fortunately, for those who want 5) to avoid a weekend without life’s little luxuries, day tickets are also available. the event, which 6) focuses exclusively on music, attracts some of the world’s most famous rock bands, from the who to the red hot chili peppers. if you love to go mad to the sound of guitars and drums, the carling weekend 7) won't be a boring experience for you!