I helped her solve the problem. (Passive)
A. She was helped solve them problem
B. The problem was solved by me
C. Her problem was solved by me
D. She was helped to solve the problem by me
সঠিক উত্তরঃ
D.
She was helped to solve the problem by me
Explanation: Help/See + object + infinitive/bare infinitive থাকলে passive voice এর বেলায় help/see এর জায়গায় এদের v3 form হবে এবং Help/see/teach এর পর ব্যক্তি বা বস্তু থাকলে verb এর base form বসে অথবা to + verb বসে।
structure: obj.কে sub + was + verb3 + to + verb + obj + by + sub এর objective form হয়।
সুতরাং নিয়মানুযায়ী সঠিক উত্তর - She was helped to solve the problem by me।