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Help pick the correct word for a sentence (so that it makes sense)

(That/this) sunset was the most prettiest one I had ever photographed.

(That/this) Extra 300S is one of those highly maneuverable airplanes.

(This/that) type of airplane was the first to be used in World War I.

(That/this) kind of buffalo is especially rare.

I have to take (these/those) oars back to the boathouse.