He worked _____ the best of his ability.
- To
- On
- Because
- None of these
Explanation
"To" completes the phrase "to the best of his ability".
It means he worked with his maximum effort.
Related MCQs
- A
- An
- The
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- Rebuke
- Regale
- Ignore
- None of these