We have been told that under no circumstances　　　　the computer in the office for personal affairs.
A．may we use
B．did we use
C．we could use
D．we may use
A
選A�？疾榈寡b語序。under no circumstances置于句首, 句子使用倒裝語序, B項(xiàng)時(shí)態(tài)不符, 故被排除, 故選A。
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