Present perfect simple vs present perfect continuous

1. She _____ (study) for three hours without a break.

• a) has studied

• b) has been studying

2. I can't believe it! I _____ (lose) my keys again!

• a) have lost

• b) have been losing

3. By the time we got to the cinema, the film _____ (start).

• a) has started

• b) had started

4. He _____ (live) in this city since 2010.

• a) has lived

• b) has been living

5. I _____ (never/eat) sushi before today.

• a) have never eaten

• b) have never been eating

6. We _____ (wait) for the bus for over an hour.

• a) have waited

• b) have been waiting

7. By the end of the month, I _____ (finish) the project.

• a) have finished

• b) will have finished

8. She _____ (travel) to many countries in the past year.

• a) has traveled

• b) has been traveling

9. They _____ (not/see) that movie yet.

• a) haven't seen

• b) haven't been seeing

10. How long _____ you _____ (know) each other?

• a) have, known

• b) have, been knowing