Here are the words that do not belong to their respective groups in each sentence:

1. **D. today** - The other options (Friday, Monday, Tuesday) are days of the week, while "today" refers to the current day.

2. **B. homework** - The other options (do, watch, listen) are verbs commonly grouped under actions, while "homework" is a noun.

3. **B. shower** - The other options (dinner, breakfast, lunch) are meals, while "shower" refers to a personal hygiene activity.

4. **C. factory** - The other options (lake, river, beautiful) represent natural features or qualities of nature, while "factory" is a man-made structure.

5. **D. street** - The other options (table, chair, shelf) are pieces of furniture, while "street" is a public thoroughfare.

6. **A. my** - The other options (she, her, his) are pronouns that refer to people, while "my" is a possessive pronoun.

7. **C. effect** - The other options (sofa, shower, picture) are physical objects or items, while "effect" is an abstract noun.

8. **A. beautiful** - The other options (bakery, drugstore, bookstore) are places related to services or retail, while "beautiful" is an adjective.

9. **D. house** - The other options (town, city, country) are types of communities or areas, while "house" refers to a type of building or structure.

10. **A. travel** - The other options (bike, bus, car) are modes of transportation, while "travel" is a verb that signifies the act of moving from one place to another.