can you help with these geruns and participles

will you tell me ithe gerunds or participle phrases and the function they play in the sentence, like Direct Object , Indirect Object, Predicate Noun, Object of Preposition, Subject, Apositive

1. In the botany class, we became quite good at identifying types of flowers

2. after dinner, feeling happy and full, we thanked our hosts.

3. searching for an answer, i looked in a current dictionary

4. smiling proudly, the little boy pointed to his new toys

5. preparing sushi is a mom's least favorite thing to do

7. buying a used car requires research

8. the little boy stomped into his room, slamming the door behind him

9. the dog, wagging its tail wildly, bounded out to meet up

10. decorating this birthday cake will take atleast an hour

thanks