0 of 1 Questions completed
You have already completed the exercise before. Hence you can not start it again.
Exercise is loading…
You must sign in or sign up to start the exercise.
You must first complete the following:
0 of 1 Questions answered correctly
Time has elapsed
You have reached 0 of 0 point(s), (0)
Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)
Conjugate the following verbs into the negative form of the past perfect.