1. Scientists conjectured that reducing the consumption of substances that emit harmful gases would reduce pollution.
2. Jonathan was irritated by the incessant noise made by the loud musical procession on the street.
3. The poor farmer was in for a pleasant surprise when he fortuitously stumbled upon a pot of gold buried in his yard.
In this exercise, you're required to fill in the gap (blank) in the given sentences with the most appropriate word as follows:
1. Scientists conjectured that reducing the consumption of substances that emit harmful gases would reduce pollution.
2. Jonathan was irritated by the incessant noise made by the loud musical procession on the street.
3. The poor farmer was in for a pleasant surprise when he fortuitously stumbled upon a pot of gold buried in his yard.
Read more on fortuitously here: https://brainly.com/question/2601859