Scientists think that the continents _______ always where they ________ today.
（A）aren’t; are
（B）aren’t; were
（C）weren’t; are
（D）weren’t; were
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更多大学英语单项选择题库试题
- 1What was one of the reasons that the South was defeated in the Civil War?
- 2The ground is wet; it _______ last night.
- 3The car was repaired but not quite to the owner’s______.
- 4______ the earth to be flat, people feared that Columbus would fall off the edge of the earth.
- 5If you had wanted to buy a record, what ________?
