The sentence that would best fit at the beginning of a first paragraph and would also make the best topic sentence is: Mammoth hot springs is a popular attraction because the springs are unique. The correct answer would be option D. This sentence is the correct answer because it is the only sentence that introduces the topic.
1. underline directions circle mall
2. underline lean circle tree
3. underline underneath circle missing library book
4. underline beside him circle her hand
5. underline arrived circle teacher? (not so sure)
6. underline through circle trees
7. underline in circle miniature train
8. underline in circle the Till whatever that name is
9. underline wrote circle the name of the song
10. underline noisy bird circle the roof.
not so sure about some of the last ones kinda hard
but a preposition is telling where something is
think of it like a position
preposition
tells where something is