1.

1). Would been great for2). Would be great in3). Would have been great to4). No improvement

Answer»

The sentence uses the past participle form of verb 'SUNG'. This indicates that the sentence must be in perfect tense.

The only option that gives a grammatically correct perfect tense is option 3. Therefore, the correct answer is option 3.

Improved sentence - It $WOULD have been great to$ $HEAR the song sung live in concert.$



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