Which sentence features a shift in tense?
a. She is breaking the plates she is carrying.
b. Grammar has always been the secret to good writing.
c. He bought a car two weeks ago, and then he goes and buys a motorcycle last week!
d. The live broadcast will last until this evening, and then the station will return to its former programming.
The answer is c. It starts in the past by saying he "bought" then shifts to present by saying "goes" and "buys" but then shifts back to past by saying "last week"
