Under no circumstances _____ anything that will benefit ourselves but at the same time harm the interests of
A. should we do
B. we should do
C. would do we
D. we would do
He gave the order that nothing _____ until the police arrived.
A. was touched
B. is touched
C. be touched
D. could be touched
隧道发生火灾，可利用移动排烟设施在上风隧道口排烟（）
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