He sat quietly on his seat or stayed alone in a corner of the playground.

在学校，他很少跟其他同学讲话，经常独自一人坐在角落里。

youdao

He sat quietly on his seat or stayed alone in a corner of the playground.

在学校，他很少跟其他同学讲话，经常独自一人坐在角落里。

youdao