21. In order to save money, the poor man gets up early at ____ dawn every day and walks to the factory in ______ distance.
A. the; / B. a; the C. /; the D. a; a
22. The customer would be urged to see a doctor. If the man did not have a doctor, then a visit to _________ would be set up.
A. that B. one C. whom D. it