1 . ________ he was tired, he went on working; ________ he knew it wouldn’t last long.
A.Although; and | B.Although; but | C.Since; and | D.Though; or |
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2 . Some people are against the plan ________ others are for it.
A.while | B.when | C.as | D.otherwise |
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3 . Take the flower into the room, ________ it will die of cold.
A.but | B.and | C.so | D.or |
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4 . It was evening ______ we reached the little town.
A.till | B.that | C.since | D.before |
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5 . ______ environmental damage is done, it takes many years to recover.
A.Since | B.While | C.Before | D.Once |
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6 . It has been 50 years _________I graduated from Benjamin Franklin High School in East Harlem.
A.that | B.when | C.since | D.before |
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7 . A gas has neither fixed size _________shape.
A.or | B.nor | C.and | D.as well as |
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8 . _________he will come to the discussion is certain.
A.How | B.When | C.That | D.Where |
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9 . _________we are very careful, we can’t do our work well.
A.Whether | B.When | C.Unless | D.As long as |
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10 . I waited _________she came back.
A.while | B.until | C.if | D.or |
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