although punctual hmself,the professor was quite used ---------late for his lecture.a.to have students b.for students'being c.for students to be d.to students' being

although punctual hmself,the professor was quite used ---------late for his lecture.a.to have students b.for students'being c.for students to be d.to students' being
although punctual hmself,the professor was quite used ---------late for his lecture.
a.to have students b.for students'being c.for students to be d.to students' being

although punctual hmself,the professor was quite used ---------late for his lecture.a.to have students b.for students'being c.for students to be d.to students' being
选c