They ____ on the project since 2010.
- Worked
- Are working
- Had been working
- None of these
Explanation
"Had been working" is used for an action that started in the past and continued up to another point in the past.
Since 2010 indicates a time duration, which suits the past perfect continuous tense.
Related MCQs
- In
- On
- Of
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- Have to
- Wouldn't
- Shouldn't
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- Does not cook
- Not cook
- Did not cook
- None of these