单项选择题

It is up to the government to tackle the air pollution problem and ______ measures in line with the council's suggestions.

A. set about
B. work out
C. fill up
D. bring over
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单项选择题
Though ______ rich, he was better off than at any other period in his life.
A. by any means
B. by some means
C. by all means
D. by no means
单项选择题
When travelling, you are advised to take travellers' checks, which provide a secure______ to carrying your money in cash.
A. substitute
B. selection
C. preference
D. alternative
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