Mr. Smith the roll of film as soon as he arrived home
A. got down to wash
B. got down to develop
C. got down to washing
D. got down to developing
网友回答
A. got down to wash
B. got down to develop
C. got down to washing
(答案→)D. got down to developing
解析：此题考查的是固定词组，get down to后可直接接名词或动词-ing形式。