2. The verb “to be” Person I You He/She/It We You They Present am are is are are are Past was were was were were were Future Will be Will be Will be Will be Will be Will be Progressive am being are being is being are being are being are being Perfect have been have been has been have been have been have been
4. He wanted a medication that was prescribed by a physician. She recognized the officer who was chasing the crook. Anyone who is willing to work hard will succeed in this program. It was Alberto who told the principal about the students' prank. A customer who is pleased is sure to return. Revised: A pleased customer is sure to return. (When “to be” and the relative pronoun are eliminated, reposition the predicate adjective to a pre-noun position.)
9. First, .. Change to: Four Underlying Causes of World War I: - the ….. - the ….
11. Verb Tenses Simple Present - Active: The company ships the computers to many foreign countries. Passive: Computers are shipped to many foreign countries. Simple Past - Active: The delivery man delivered the package yesterday. Passive: The package was delivered yesterday. Simple Future - Active: Our representative will pick up the computer. Passive: The computer will be picked up .
12. Verb Tenses Present Progressive - Active: The chef is preparing the food. Passive: The food is being prepared . Past Progressive - Active: The producer was making an announcement. Passive: An announcement was being made . Future Progressive - Active: Joe will be studying English when you arrive tonight. Passive: Not Used
13. Verb Tenses Present Perfect - Active: Someone has made the arrangements for us. Passive: The arrangements have been made for us. Past Perfect - Active: They had given us visas for three months. Passive: We had been given visas for three months. Future Perfect - Active: By next month we will have finished this job. Passive: By next month this job will have been finished .