第1个回答 2013-10-20
He is very popular among the students, because he always tries to make their interest in his lecture
第2个回答 2013-10-20
He is very popular among the students,for he always tried his best to get them interested in his lecture.
第3个回答 2014-01-22
He is very popular among his students as he always tries to make them interested in his lectures.