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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

Scientists think that the continents ______ always where they ______ today.

A. aren’t; are      B. aren’t; were      C. weren’t; were       D. weren’t; were

 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

 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

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