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[求助]grammar
65. Photographer Edward Steichen constantly (experimented new) techniques and materials (in )his quest (to have) photography accepted (as) a creative art. Key: A, but I think C (change to "to make")
101. The (migration route) of the first humans to occupy North America took (them across) a land bridge that once (was connected) Asia with (what) is now Alaska. Key:C, but I think B (change to "them to cross")
109. The chief (character) or hero (of piece) of fiction or (drama) is (known as) the protagonist. Key: B, but I think D (change to "known for")
133. The two (steel towers) of the Golden Gate Bridge in California are (the tallest) bridge towers in the world, (each measuring) 227 meters in (high). key: D (I don't know how to revise it.)
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