单项选择题

The changes in the city will cost us a lot of money, ______ they will save us money in the future. ( )

A．or
B．since
C．for
D．but
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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
单项选择题
He said the pain had grown worse on their ______ to the hospital. ( )
A．road
B．street
C．direction
D．way
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