1. b. schools were forced to close 2.c. past perfect 3.a. covert 4.c. They were close and loving. 5.b. It was ironic that Billy would die of a heart attack in a war.
The correct options are as follows: 1. B. There were lots of protests against the Vietnam war in the 1970s. The protests were conducted to demonstrate people's opposition to the war and the demonstration took place in different parts of America. During this period, students left their studies to participate in these protests and the schools has to close down when they realized that students are no longer coming for lectures. 2. C. A past perfect tense is a tense which indicates that an action was completed at some point in the past before something else now happen. The past perfect tense is usually formed by using the word 'had' and the past participle of a verb. 3. A. A synonymy is a word that have nearly the same meaning as another word. Stealth is used to describe actions that are performed in such a way that they will not attract attention or be noticed by others. Covert means not to openly acknowledge or display something. Thus, covert and stealth has similar meaning. 4. C In the book 'Where have you gone charming Billy', Paul memories and fantasies revealed that his family was one in which the members are close and they had a loving relationship with one another. All these memories flooded Paul's mind during the time that he was on the war field. 5. B. Berlin find it difficult to stop laughing because it find it ironic that Billy will die of heart attack in a war. Billy was very afraid when he found himself on the war field. The fear was so much that he developed a heart attack which leads to his death.
