Complete the 12 sentences below. Choose the best answer for each one.
By the time the keynote started, the technicians ............... the microphones twice, so the sound was crystal clear.
Wrong!
Use the past perfect to show the earlier action was completed before the keynote started.
I ............... my old boss at the conference, but I recognized her voice before I turned around.
Wrong!
Use the past perfect negative for something that had not happened before another past moment.
While we ............... dinner, the power went out and the oven shut off mid roast.
Wrong!
Use the past continuous for an action in progress when another past event happened.
She looked exhausted because she ............... since dawn and still hadn't finished the report.
Wrong!
Use the past perfect continuous to show an activity that started earlier and continued up to a past point.
I ............... to call you, but my phone died on the train, so I couldn't.
Wrong!
Use "was going to" for an intended action that did not happen.
He ............... the contract before he noticed the missing page, so it was too late to change it.
Wrong!
Use the past perfect for an action completed before another past discovery.
They ............... in that flat for years before they finally bought a house nearby.
Wrong!
Use the past perfect to show the earlier state ended before the later past action.
I ............... my keys when you called, which is why I didn't answer right away.
Wrong!
Use the past continuous for an action in progress at the time of the call.
We ............... for nearly an hour when the bus finally showed up, soaking wet and late.
Wrong!
Use the past perfect continuous to show how long something had been happening before another past event.
When I was a teenager, I ............... up early on Saturdays, but now I sleep in.
Wrong!
Use "used to" for a past habit that is no longer true.
As soon as the judge entered, everyone ............... talking and stood up at once.
Wrong!
Use the past simple for a completed action that happened immediately after another past event.
I ............... the email, but I realized too late I'd attached the wrong file.
Wrong!
Use the past simple for a completed action, followed by another past event.
Done.
Score: 0/12
Answers
- By the time the keynote started, the technicians had tested the microphones twice, so the sound was crystal clear.
- I hadn't recognized my old boss at the conference, but I recognized her voice before I turned around.
- While we were cooking dinner, the power went out and the oven shut off mid roast.
- She looked exhausted because she had been working since dawn and still hadn't finished the report.
- I was going to to call you, but my phone died on the train, so I couldn't.
- He had signed the contract before he noticed the missing page, so it was too late to change it.
- They had lived in that flat for years before they finally bought a house nearby.
- I was looking for my keys when you called, which is why I didn't answer right away.
- We had been waiting for nearly an hour when the bus finally showed up, soaking wet and late.
- When I was a teenager, I used to up early on Saturdays, but now I sleep in.
- As soon as the judge entered, everyone stopped talking and stood up at once.
- I sent the email, but I realized too late I'd attached the wrong file.

