Exercice 4. Mark the letter A, B, C,or D to indicate the correct answer to each of the following questions. 1. The school has introduced a program __ students about the importance of preserving cultural heritage. A. Educate B. educating C. educated D. to educate 2. Trang An Scenic Landscape Complex is the first mixed heritage site in Viet Nam __ by UNESCO. A.to recognize B. to be recognized C. recognizing D. to recognizing 3. The local authority is making efforts __ the historic buildings in the town. A.to restore B. restoring C. restore D. to restoring 4. Located in the heart of the capital city of Hanoi, Hoan Kiem Lake is one of the most fascinating attractions __ in this area. A. Visit B. visiting C. to visit D. visited 5. Fansipan is the highest mountain peak __ in Viet Nam. A. to be found B. to find C. find D. finding 6. The first heritage site in Viet Nam __ to UNESCO'S World Heritage List was the Thang Long Imperial Citadel in Hanoi. A. Add B. adding C. to be added D. to add 7. The report offers suggestions __ improvement to policy. D. with A. about B. to C. for 8. Participants are encouraged to give voice __ their personal hopes,fears and dreams. A. for B. of C. about D. to 9. Son Doong Cave is the largest cave __ in Phong Nha-Ke Bang National Park. A. to be discovered B. Discovering C. Discover D. which discovered 10. Children can have fun and learn __ music at the same time. D. to A. for B. of C. about

1. **D. to educate**<br /><br />The sentence requires an infinitive phrase ("to educate") to function as the object of the verb "introduced." The program's purpose is to educate students.<br /><br />2. **B. to be recognized**<br /><br />The sentence describes a passive action. The site was recognized, not the site did the recognizing. "To be recognized" is the correct infinitive passive form.<br /><br />3. **A. to restore**<br /><br />Similar to question 1, the infinitive "to restore" is needed to complete the sentence and show the purpose of the local authority's efforts.<br /><br />4. **C. to visit**<br /><br />The phrase "one of the most fascinating attractions to visit" indicates that the attractions are worth visiting. "To visit" functions as an adjective modifying "attractions."<br /><br />5. **A. to be found**<br /><br />Fansipan is the subject of the sentence, and the action of being found is done to it. Therefore, the passive infinitive "to be found" is correct.<br /><br />6. **C. to be added**<br /><br />The Citadel was the recipient of the action of being added, requiring the passive infinitive "to be added."<br /><br />7. **C. for**<br /><br />The preposition "for" is correct in this context. Suggestions are offered *for* improvement.<br /><br />8. **D. to**<br /><br />The correct preposition is "to." Give voice *to* something means to express something.<br /><br />9. **A. to be discovered**<br /><br />The cave was discovered, not the cave did the discovering. The passive infinitive "to be discovered" is needed.<br /><br />10. **C. about**<br /><br />Learn *about* music means to gain knowledge or understanding of music.<br />