单项选择题

When something happens ______ we like, we usually feel joy or happiness, which is a positive and powerful emotion and for which we all strive.

A．upon
B．to
C．that
D．what
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单项选择题
There was no tickets ______ for Friday's performance.
A．preferable
B．considerable
C．possible
D．available
单项选择题
A spokesman said that the people had greatly ______ the pollution.
A．exaggerated
B．boasted
C．flattered
D．enlarged
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