Change the following sentence in to present perfect : I do the sum
- I have done the sum
- I was doing the sum
- The sum was done by me
- I did the sum
Answer: I have done the sum
Explanation: Present perfect tense – এ Subject – এর পর have/has এবং মূল verb – এর past participle হয়। সুতরাং সঠিক উত্তর (ক) ।