She looks forward every spring to the flower-lined garden.
A. visit
B. paying visit
C. walk in
D. walking in
网友回答
A. visit
B. paying visit
C. walk in
(答案→)D. walking in
解析：受思维定式的影响,不少考生一看到look forward加上every spring这一状语后,便习惯地把to看作不定式符号,认为后面接动词原形,其实本题去掉状语every spring并不影响句子结构,这里to仍为介词,后接名词、代词或动名词。故正确答案为D。