lt is hot on summer那里错了

lt is hot on summer那里错了

应该是in summer

instead of going
what should everyone do ?
they take turns to clean the classroomm.
we must make the children far away from the rivers and lakes.
it is interesting to know that they clean their ears with their tough.
you were careless in last exam, you should be more careful next time.
anywhere
middle
empty
owner
what should we do everyday?
you should listen to what your teacher says.
we stayed at home because of the bad weather.
listen, somebody is press the bell.
if you want to keep healthy, you must make sure of do some exercise everyday.
dogs are our friends,we should not be afraid of them.
in summer, you should at least wash your baby once a day.
shanwei golden fish is different from other ones

在夏天是：in summer
在夏天很热
It's hot in summer
例句：
1、在夏天很热，但是冬天非常冷。
In summer, yes.But in winter its very cold.
2、法兰克︰垦丁在夏天时会很热。
Frank: It's roasting in Kenting during the summer.