单项选择题

Efforts to reach the injured men have been ______ because of a sudden deterioration in weather conditions.

A．enforced
B．intensified
C．continued
D．strengthened
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单项选择题
I don't understand why people ______ such a beautiful garden with cans and bottles.
A．located
B．provided
C．protected
D．littered
单项选择题
The appeal for funds did not ______ much response.
A．drag
B．elicit
C．tempt
D．attract
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