Although punctual himself,the professor was quite used（ ）late for his lecture.A.to have studentsB.for students' beingC.for students to beD.to students' being

Although punctual himself,the professor was quite used（ ）late for his lecture.A.to have studentsB.for students' beingC.for students to beD.to students' being
Although punctual himself,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 himself,the professor was quite used（ ）late for his lecture.A.to have studentsB.for students' beingC.for students to beD.to students' being
D.to students' being
be uede to（ doing）sth 习惯于
students'being late ving复合结构