---People are not allowed in the cinema.-But they will allow in the restroom.A. to smok

问题补充：

---People are not allowed in the cinema.

---But they will allow in the restroom.

A. to smoke; smoke

B. smoking; to smoke

C. to smoke; smoking

D. smoking; smoke

答案：

A. to smoke; smoke

B. smoking; to smoke

(答案→)C. to smoke; smoking

D. smoking; smoke

解析：be allowed to do sth，表示允许某人做某事，而allow doing sth，表示允许做某事，故选C