Question

The rainy season is my favourite time of.....year,especially since it marks the end of......sticky sweaty summer. (use appropriate articles)

Answer 1

The rainy season is my favourite time of the year, especially since it marks the end of the sticky sweaty summer.

You have to use the definite article the.

HOPE IT HELPED YOU.................
:)

Answer 2

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The rainy season is my favourite time of the year,especially since it marks the end of the sticky sweaty summer.

So, here we used article 'the'.