What does Dr. Jekyll ask Dr. Lanyon to retrieve from his house on the night of January 9?
a.
b.
C.
d.
a box
a drawer
a letter
money

repetition is used to make the poem come off the page

type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.