verbs in each group into the Past Simple, the Past Continuous or the Past Perfect. 1 make a Paul..... a phone call when I went into his office. b Paul had some coffee first and…

Here are the verbs in each group changed to the Past Simple, the Past Continuous, or the Past Perfect as appropriate:

1. make a. Paul was making a phone call when I went into his office. (Past Continuous)
b. Paul had some coffee first and then he made some phone calls. (Past Simple)
c. Paul had made twenty phone calls by the time he left the office for the day. (Past Perfect)

2. get a. As it was getting dark, the boys decided to go home. (Past Continuous)
b. When it got dark, all the lights in the park went on creating a beautiful atmosphere. (Past Simple)
c. By the time the boys decided to return home, it had gotten so dark that they needed a torch to find their way. (Past Perfect)

3. perform a. Dr. Stephens was performing an experiment while his students were watching him. (Past Continuous)
b. Dr. Stephens had performed a lot of experiments before he made an important discovery. (Past Perfect)
c. Two weeks ago, Dr. Stephens performed an experiment with the help of some university students. (Past Simple)

4. fall a. The baby fell asleep as soon as we put her in her bed. (Past Simple)
b. As the baby was falling asleep, she was making some funny sounds. (Past Continuous)
c. The baby had fallen asleep by the time he got home and he didn't want to wake her up. (Past Perfect)

5. read a. Laura had read the report many times before she gave it to her boss. (Past Perfect)
b. While Laura was reading the report, her computer started making strange noises and stopped working. (Past Continuous)
c. Laura read the report, switched off her computer, and went home. (Past Simple)