— Would you allow me here?
— Sorry. We don’t permit in the lab.
A. smoking; smoking
B. to smoke; to smoke
C. smoking; to smoke
D. to smoke; smoking
网友回答
A. smoking; smoking
B. to smoke; to smoke
C. smoking; to smoke
(答案→)D. to smoke; smoking
解析：可联系答.案.网客服索取。