6 Now focus on the words in bold in the previous exercise (in, on, at) and match
the items below. Write the answers in your notebook.
a. We use in
b. We use on
c. We use at
I. for ages (12, eighteen) and a specific time (10 a.m., 3 o'clock).
II. for dates (May 3, my birthday) and days (Sunday, Tuesdays).
III. for years (1937, 2020), months (May, December), centuries (the XIX
century, last century), seasons (summer, winter) and long periods (the past,
the future)