Indique a alternativa que contém o uso adequado das preposiçõe...

Indique a alternativa que contém o uso adequado das preposições in, on, at.1. Class starts
7:00 p. mtoday.
a) AT
b) IN
c) ON

2. They go to classMondays, Wednesdays, and Fridays.
a) AT
b) IN
c) ON
3. There are no classessummer
a) AT
b) IN
c) ON
4. Russia was the World Cup host nation2018
a) AT
b) IN
C) ON.
5. He will be 21 years oldsetember 4, 2027.
a) AT
b) IN
C) ON
​