discovers

"My friend told me there was something in the box, but I didn't know what it was yet. "

"The building of the bridge will be completed in a couple of weeks."

"The customs officer checked the ship's manifest to verify the cargo being imported. "

"The pilot reported the findings of his reconnoitre."

"The hikers were amazed by the powerful waterfall cascading down the rocky cliff face. "

"He removed the marbles from the bag."

"The dog is exploring the backyard for his lost ball. "

"The car was turning left at the intersection. "

"Construction is underway on the new bridge."

"The information about the project deadline resolved my uncertainty; now I know what needs to be completed. "

"Suppose we have a widget factory that produces 100 units per year..."

"Turning the corner, I discovered a lovely little shop. I discovered that they sold widgets."