For example, to answer a question about how programs to serve handicapped children are working, we might select the cases of preschool and elementary programs; we might further select within preschool programs, those for the hearing impaired and those for the orthopedically impaired.
To see how programs are working we can look at empirical data.
To see how programs are working you can not look at empirical data.
The people are outside.
But by the time I got upstairs, he was gone.
Man riding a skateboard in a competition.
The group of students held plates behind their heads.
He was a sheeted ascetic
A city worker is using a flag to help control traffic.