Одной капли чернил достаточно, чтобы возбудить мысль у тысяч, даже у миллионов людей

НАДО СДЕЛАТЬ СИНТАКСИС, ПЛЗ, ПОМОГИТЕ И ХАРАКТЕРИСТИКУ

Нужно вставить предлоги:

about, by, for, in, of, over, to, with

October 1st is international day for the elderly. It started (1)___ the 1990s, when the United Nations decided that older people a holiday. Now millions (2)___ people all (3)___ the world are involved (4)___ the celebrations every year, People celebrate the day (5) ___ organising parties and picnics (6) ___their grandparents or eldery relatives. It is a terrfic holiday (7) ___ show how much we care (8)___ them. It is also nice to provide them (9) ___ our support and love.

Помогите, пожалуйста :з