What two books has john read? brand new world

Explanation: john has only read two books, a scientific journal his mother acquired while working in the hatchery, and The Complete Works of Shakespeare. The name of the second book was The Chemical and Bacteriological Conditioning of the Embryo.

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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.