Identify the sentence that contains a past perfect verb.
A.
By the end of the period, all the students had completed the exam.
B.
By the time the car stopped, it has flipped three times.
C.
By the time the car stopped, it flipped three times.
D.
My father told me that I have disappointed him.
A.
By the end of the period, all the students had completed the exam.
B.
By the time the car stopped, it has flipped three times.
C.
By the time the car stopped, it flipped three times.
D.
My father told me that I have disappointed him.