单项选择题

A group of neighbors ______ the fire burning in the building by the time emergency responders arrived on the scene.

(A) had extinguished
(B) extinguished
(C) extinguishes
(D) will have extinguished
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单项选择题
Who will meet with the president on Tuesday
A．Opposition politicians
B．Construction representatives
C．Computer technology CEOs
D．Car manufacturers
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What are guests encouraged to do later
A．Create and present their own art
B．Watch an informational film
C．Take advantage of a sale in the gift shop
D．Provide Omar with feedback
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