11. comma fault
The sentence should have been:
Like a puppy, drawing attention to itself at every opportunity.
12. none of the above
CORRECT: Take the bread out of the oven; the crust is starting to burn.
13. seats, and
14. horseshoes; she
15. clocks, nevertheless,
16. cool;
CORRECT: The night was cool, yet we wrapped up in blankets, and we stayed warm.
17. course,
CORRECT: We have the data, of course; can we apply it to the theory?
18. planned, in fact,
CORRECT: The class read the play and chose a scene to memorize; they planned, in fact, to perform the scene for the school.
19. foundation, however,
20. bus; he will need, therefore,