TOEIC Reading 5 Exercisee 200

<p dir="ltr"><span>The question is a complex sentence. The main clause is “The manager believes something,” followed by a noun clause that starts from the subordinating conjunction “that” and continues to the end of the question to explain what is believed by the manager.&nbsp;</span></p><p dir="ltr"><span>Let’s focus on the noun clause, “that replacing the existing outdated machinery with a new one will make it possible ________ productivity by fivefold.” The noun clause follows the pattern: S + V + O + OC.&nbsp; The subject is “replacing the existing outdated machinery with a new one,”&nbsp; the verb is “will make,” the object is “it,” and the object complement is “possible.”&nbsp; However, the object “it” is a “dummy object.” The real object is the phrase after the object complement “_______ productivity by fivefold.”</span></p><p dir="ltr"><span>The blank should be filled with an infinitive because when the pronoun “it” is used as an object, it always represents a real object in the form of an infinitive placed after the object complement. Thus, the correct answer is Choice (D) </span><span>to increase.&nbsp;</span></p>