We _______ in the office.
A．a(chǎn)re not permitted smokeB．a(chǎn)re not permitted smoking
C．don’t permit smokingD．don’t permit to smoke
C
考查短語: permit sb to do 允許某人做某事，permit doing 允許做某事，句意:我們不允許在辦公室吸煙。permit的否定式應用助動詞，所以選C。
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