let’s play soccer for an hour ()school.in 还是at why?

let’s play soccer for an hour ()school.in 还是at why?
let’s play soccer for an hour ()school.in 还是at why?

let’s play soccer for an hour ()school.in 还是at why?
用at,固定搭配

at
in school指在上课，求学中。at school在学校里

应该是at school 吧。in后面一般加的是大地点，如in Beijing，in China等。而at后一般加小地点，如at home，at school。