One tricky suffix is -ly, which usually, but not always, denotes an adverb.
select all of the -ly words that are adverbs. some affixes have more than one use.
1. resolutely
2. reasonably
3. truly
4. lovely
5. fiercely
6. likely
7. friendly
8. emphatically

The words that denote an adverb are: resolutely, reasonably, truly, fiercely and emphatically

Explanation:

The suffix "ly" can have different uses, turning an adjective into an adverb is the most common one but not the only one, the other two uses of this suffix is to add the meaning of "every" or "like" to other words, besides it is not always after an adjective it could also follow a noun, for instance Lovely, likely, friendly from this list, are adjectives even when they have the "ly" suffix.

"it's more of an essay than story, but perhaps it is best described as a mood-piece: it uses a lot of musical imagery, not to mention sea imagery, religious imagery, and any other imagery that suits his purpose."

21 balloons is the story of professor william sherman's travels.

in 1883, he set off from san francisco for a balloon ride over the pacific and was found a month later floating with 21 balloons in the atlantic ocean. this seemed an astounding feat and everyone wanted to know what had happened.    

professor sherman was loyal, however, and said he would tell his tale first to the western american explorers club in san francisco, of which he was a member. this built up suspense for several chapters before he began to tell of the wonders of his adventures and the amazing island of krakatoa, an island which had just been blown up by a volcano.  

the residents of krakatoa are all millionaires who live under a "gourmet government" of their own devising. we get to see all the incredible adventures that creative people with unlimited resources would create according to the author.