In Amsterdam, the capital of Holland, there is a unique Children Restaurant. It is run wholly by the children. From the manager to the cooks, cashiers, waiters or waitresses and other staff members are all children from 6 to 12 years old. They themselves do all the necessary work such as cooking and cleaning. These children are selected in Amsterdam. After training, they may serve in the Restaurant for four weeks. All of them are willing to work there and they are very proud of the work. This Restaurant was founded in 1983 by a woman cook, who wanted to give the children chances to learn to be useful to the society. And now she is the only adult there, but her job is just to take care of the children. The Restaurant is welcomed almost by everyone. Since there are only 20 seats in the restaurant, it is always very crowded. So you should make a reservation months in advance. The cost of a meal differs according to the customers. Usually US $4 for each adult, but much cheaper for the children. And its business hours are only on Saturday evenings and Sunday afternoons. 1. The children in this restaurant ______.