缺词填空（本题共10小题，每小题1分，共10分）
Most children today go to a school where each class has its o  room. It was d  many years ago. Most children w to a one-room schoolhouse. In a one-room schoolhouse all the children learned in one room from the s  teacher. A fourth grader might have sat next to a n   grader. Possibly you have seen a one-room schoolhouse o  a television program.
There w  a good reason for many of the one-room schoolhouse. They were often in the countryside, where there were o ten to twenty children going to school. Then one room was big e for everyone! Today there are many m  children going to school. The one-room schoolhouse has just about disappeared.