Sentence improvement (sequence of tenses; past perfect progressive for earlier ongoing work) Original sentence: "My doctor knew that I would eventually recover and do kind of work I would be doing before" Choose the option that best completes the clause referring to the earlier continuous activity.

Given data

• Matrix past: “My doctor knew …”.
• Projection: “… I would eventually recover and (again) do the same kind of work …”.
• Reference to activity prior to that past point (“before”).

Concept/Approach
To refer to an ongoing activity that occurred before another past reference point, use the past perfect progressive: had been doing. This shows continuity up to the earlier time.

Option analysis
had been doing — correct tense and aspect for prior continuous work. ✅had been done — passive; wrong meaning.would have been doing / would have done — conditional perfects; wrong timeline.

Final Answer
… the kind of work I had been doing before.