24. in which case should you use a hyphen instead of a dash
a. to combine words
b. to join related thoughts
c. to indicate that a speech has been interrupted
d. to place extra emphasis on words inserted into a sentence

Some keep the sabbath in surplice - i just wear my wings - and instead of tolling the bell, for church, - our little sexton - sings

How does the first section of the memoir conclude?

“what i heard was abominable,” said utterson. “it can make no change. you do not understand my position,” returned the doctor, with a certain incoherency of manner. “i am painfully situated, utterson; my position is a very strange—a very strange one. it is one of those affairs that cannot be mended by talking.” –the strange case of dr. jekyll and mr. hyde, robert louis stevenson write two to three sentences explaining how this passage creates suspense.