Directions: Decide which of the choices given below would best complete the passage if inserted in the corresponding blanks. Mark the best choice for each blank on ANSWER SHEET.
In the United States, the first day nursery was opened in 1854. Nurseries were established in various areas during the 【A1】______ half of the 19 th century; most of 【A2】______ were charitable. Both in Europe and in the U.S., the day-nursery movement received great 【A3】______ during the First World War, when 【A4】______ of manpower caused the industrial employment of unprecedented（前所未有） numbers of women. In some European countries nurseries were established 【A5】______in munitions（军火） plants, under direct government sponsorship. 【A6】______ the number of nurseries in the U.S. also rose 【A7】______, this rise was accomplished without government aid of any kind. During the years following the First World War, 【A8】______, federal, State, and local governments gradually began to exercise a measure of control 【A9】______ the day nurseries, chiefly by 【A10】______ them and by inspecting and regulating the conditions within the nurseries.