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Elementary Fourth Edition
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Unit 7
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in, at, or on?
Grammar
Vocabulary
Everyday English
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in, at, on
Choose the preposition that goes with each expression.
...
in
at
on
12 o'clock
...
in
at
on
weekdays
...
in
at
on
winter
...
in
at
on
21 October
...
in
at
on
Monday
...
in
at
on
January
...
in
at
on
my birthday
...
in
at
on
the evening
...
in
at
on
weekends
...
in
at
on
2018
...
in
at
on
half past six
...
in
at
on
night
