Which sentence has an inappropriate shift in verb tense?

a. i was relieved that he hadn't gotten into the garbage can in the kitchen.
b. the newspapers were shredded and thrown all over the living room.
c. the dog looked innocent but then he ran and hide under the table.
d. our new puppy rips up paper and chews on things he isn't supposed to touch.

Does any one read this story "when mr. came to dine". in 9th grade. plz i need with one question about this story?

What is the problem with the following sentence: cameron, who has an extreme and unreasonable suspicion of other people and their motives, suffers from paranoia which is a psychological disorder characterized by delusions of persecution or grandeur, was absolutely sure that someone was following him even though he was absolutely alone and hadn't seen a car for miles and miles.

3. what is the purpose of a lead sentence or paragraph? to display your most convincing reasons and arguments to you revise the overall structure of your work to interest readers and introduce your writing style to add details and elaborate on your ideas