单项选择题

First designated in 1970, Earth Day has become an annual international event ______ concerns about environmental issues such as pollution.

A．dedicated to raising
B．dedicated raising
C．dedicated to raise
D．that dedicates to raising
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单项选择题
The words Francis Key wrote on the back of an old letter The Star Spangled Banner became the national ______ of the United States.
A．song
B．hymn
C．anthem
D．motto
单项选择题
We could not obtain any exact information ______ where she was.
A．far from
B．as to
C．except
D．along with
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