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單項選擇題

It was well known that Thomas Edison（）the electric lamp.

A.invented
B.discovered
C.found
D.developed

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單項選擇題

It was in（）the American astronauts succeeded in landing on the moon.

A.when
B.the moment
C.which
D.that

單項選擇題

It was a great pleasure（）me to be invited to the party.

A.for
B.on
C.to
D.of

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