（ ）some students,the teacher entered the hall.

（ ）some students,the teacher entered the hall.
（ ）some students,the teacher entered the hall.

（ ）some students,the teacher entered the hall.
两个答案： 1). Following（现在分词表示主动）句意：老师跟着学生们进入大厅（老师在学生后面） 2). Followed by（过去分词表示被动）句意：老师被学生们跟着进入大厅（老师在学生前面）