It's ( )our art teacher应该怎么填,是填for,to还是at

It's ( )our art teacher应该怎么填,是填for,to还是at
It's ( )our art teacher应该怎么填,是填for,to还是at

It's ( )our art teacher应该怎么填,是填for,to还是at
应该填for,它表示给的意思.而to虽然也是给的意思,但在这个语境中不能用to,at就完全错了,它表示在什么时间,所以只能用for.