Everyone was in ()places when the teacher entered the classroomhis,one's,her,their,应该选哪个?Everyone是复数,可系动词是单数,然后places又是复数,我搞不懂应该填复数形式的呢还是单数形式的,求讲解

问题描述:

Everyone was in ()places when the teacher entered the classroom
his,one's,her,their,应该选哪个?Everyone是复数,可系动词是单数,然后places又是复数,我搞不懂应该填复数形式的呢还是单数形式的,求讲解