She looks forward every spring to _______ the flower-lined garden.
A. visit B. paying a visit C. walk in D. walking in
She looks forward every spring to _______ the flower-lined garden.
A. visit B. paying a visit C. walk in D. walking in
D
look forward to 中 to 是介词，后接动词要用动名词。若选 B，应在其后加 to 才行。