You should, of course, own a good college dictionary. In it you will surely find a table of proofreader's signs and symbols. I often use these conventional markings. Your quotation is inaccurate in some detail, perhaps by omitting an initial capital letter at the start of a line.
Plural subjects take plural verbs.
The mere presence of a plural noun in between the subject and verb does not justify changing the verb to the plural if the grammatical subject is singular. Substitute either a semicolon, if the items are closely related, or a period. However, if you've earned your reader's confidence, an occasional fragment used for rhetorical effect will be acceptable. An expression of your reader's befuddlement or incredulity. Your meaning is unintelligible.