单项选择题

of years ago, whales lived land and walked on four legs. ( )

A．Millions…on
B．Million…in
C．Millions…on the
D．Million…on

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单项选择题

I finally got the job I dreamed about. Never in my life ______ so happy. ( )

A．did I feel
B．I felt
C．had I felt
D．I had left

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