Focus on the pronunciation of suppose
English definition of “suppose”
/səˈpoʊz/ conjunction (also supposing /səˈpoʊ·zɪŋ/) (WHAT IF)
› (used at the beginning of a sentence or clause) what would happen if: Suppose we miss the train – what would we do then? Supposing that you had that opportunity, Mrs. Gallagher, what would you say?