1.

1). Only option A2). Only option B3). Only option C4). Both A and B

Answer»

The SENTENCE has the WORD 'although' thus 'but' cannot be used here. The sentence talks about a past activity thus the correct tense here should be simple past. Thus only option B is the correct ANSWER.

Option A and C have INCORRECT tense thus they are rejected.

Thus option 2 is the correct answer.



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