We have been told that under no circumstance the telephone in the office for personal aff

问题补充：

We have been told that under no circumstance the telephone in the office for personal affairs.

A. may we use

B. we may use

C. we would use

D. did we use

答案：

(答案→)A. may we use

B. we may use

C. we would use

D. did we use

解析：考查倒装结构。宾语从句中有否定词no circumstance放在句首，故从句主谓要倒装，根据句意为我们可以再办公室使用电话，故选A。