We have been told that under no circumstances the telephone in the office for personal af

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(答案→)A. may we use
B. we may use
C. we use
D. do we use
解析：考查倒装句，under no circumstances绝不，放在句子的开头，或从句的开头，句子要部分倒装，情态动词，助动词或be动词在主语前面，句意：我们被告知绝不能用办公室的电话办私事。选A。