Multiple choice general knowledge math & puzzles

He tried very hard ……… did not succeed.

  1. because

  2. and

  3. but

  4. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The sentence shows a contrast between effort and result. 'But' is the coordinating conjunction used to introduce a phrase that contrasts with what has already been mentioned. 'Because' and 'and' do not convey this opposition.

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