In the following sentence the word(s) that the adverb clause modifies is/are

bus
is
will pick up
school

Which poems include the theme that memories of beautiful natural places benefit the people who recall them? "to spring" and "lines written in early spring" "to autumn" and "to a butterfly" "to summer" and "the human seasons" "i wandered lonely as a cloud" and "lines on a beautiful spring in a village"