TOEIC Reading 5 Exercisee 142

<p>Let's analyze the sentence:<br></p><p><strong style="font-weight: 600;">Several researchers have been working on a project (____ into the potentials of our dreams)&nbsp;&nbsp;</strong></p><p dir="ltr"><span>The part wrapped with "()" is an adjective clause.</span></p><p dir="ltr"><span>Let’s focus on the adjective clause, “which taps into the potentials of our dreams.”&nbsp;</span></p><p dir="ltr"><span>We can turn an adjective clause into an adjective phrase. Here is how it works:</span></p><p dir="ltr">1. Since the word “which” is a subject-relative pronoun in this adjective clause, it can be omitted.&nbsp;</p><p dir="ltr">2. The verb “taps” in this adjective clause is in active voice, so we need to change into a present participle, that is, “tapping.”&nbsp;</p><p dir="ltr">Thus, the adjective phrase becomes: "tapping into the potentials of our dreams".</p><p dir="ltr">The correct answer is (B) tapping.&nbsp;</p>