Without the air to hold some of the sun’s heat, the earth at night_____very cold, too cold for us to live.
A.will be | B.would have been | C.is | D.would be |
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Without the air to hold some of the sun’s heat, the earth at night_____very cold, too cold for us to live.
A.will be | B.would have been | C.is | D.would be |