单项选择题

In the future, people will mainly depend on ______ energy.

A．sun
B．solar
C．mine
D．mineral
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单项选择题
They agreed to order ______ the waiter recommended to them.
A．whomever
B．whoever
C．whichever
D．whatever
单项选择题
______ everyone gets a headache now and then.
A．Hardly
B．Scarcely
C．Virtually
D．Likely
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