Identify the sentence that contains a past perfect verb. a. by the end of the period, all the student had completed the exam. b. my father told me that i have disappointed him. c. by the time the car stopped, it flipped three times. d. by the time the car stopped, it has flipped three times.

you have to tell us what you're talking about or it's impossible to answer.

honestly this is the biggest mood ever, i couldn't relate to this more

explanation:

sir, we have done everything that could be done to avert the storm which is now coming on" is the sentence that best articulates this. then he gives the examples.   mark me brainliest

answer

the answer is a