Take a look at the sentence again:
When Mom __________ out the kitchen rug, dog hair, bread crumbs, coffee
grounds, and spaghetti noodles flew through the air and dusted the sidewalk.
The sentence requires the past tense of shake, an irregular verb. Shook is the simple past form.
| Verb | Simple Present | Simple Past | Past Participle |
| shake | shake(s) | shook | shaken |
Had shook, your choice, is wrong because you cannot combine shook, the simple past form, with an auxiliary verb like had. Before you continue, review the rules for irregular verbs.
Go back to the sentence to try again.