Preposition of Time 'in' | Part 2

<p>We use &#39;in&#39; to talk about:</p> <p>- Months / Seasons: in April, in (the) summer, in (the) spring;</p> <p>- Years / Decade / Centuries: in 2020, in the 70s, in the 21th century;</p> <p>- Long periods: in the present, in the past, in the future, in the ice (middle) age(s); </p> <p>- Parts of the day: in the morning, in the afternoon, in the evening.</p> <p><br></p>