In some respects, this is a reasonable supposition to make.

A reasonable supposition, that, though not an intelligent one.

Experience told him that it was a reasonable supposition.

After all, it was a reasonable supposition, based on the state of the physicist's mind the day before.

After all, this was the most reasonable supposition; and I don't wonder that those who have heard my story refuse to entertain any other.

This was a reasonable supposition, and in many ways provably true, for such archaeologists already existed in small numbers.

Not precisely, Captain, but it is a reasonable supposition.

It seemed a wholly reasonable supposition that the American missile submarine would stay near the surface.

Certainly that is a reasonable supposition.

I mean proof, not reasonable supposition.