8zg. EL PLURAL DEL SUSTANTIVO. THE PLURAL OF NOUNS (Tema III, desde la página 27 hasta la pagina 33 de Gramática Inglesa para Estudiantes Españoles)

8zg) Choose the correct form of the verb, singular or plural (Capítulo III, desde la página 27 a la página 33 de Gramática Inglesa para Estudiantes Españoles):

8zg) Choose the correct form of the verb, singular or plural (Capítulo III, desde la página 27 a la página 33 de Gramática Inglesa para Estudiantes Españoles):
1. Physics (is/are) a collection of good tricks and bad jokes
2. The company's corporate headquarters (is/are/) at 395 Nelson Str
3. The tongs (was/were) by the fireplace.
4. Police (is/are) no closer to finding the identity of the killer
5. The cattle (is/are) fed on barley, grass and rape
6. Under a nearby tree, a group of children (is/are) having their school lunch
7. Germany (was/were) France's main supplier of manufactured goods before the war