单项选择题

The candles were useless in the _________ smoke, and it was many minutes before the rescuers could see.

A．intense
B．severe
C．vigorous
D．dense
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单项选择题
A report _________ brought back by visitors to the US is how friendly, considerate, and helpful most Americans were to them.
A．continuously
B．consistently
C．considerably
D．continually
单项选择题
The company has retrained its employees to emphasize service and is boasting about the re suits in an ad _________.
A．movement
B．battle
C．operation
D．campaign
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