单项选择题
A 15-year-old boy was（）for stealing 22 charity boxes from local shops.
A.convicted B.sentenced C.arrested D.attacked
单项选择题 He was（）the preparation of an international conference when I arrived in Beijing.
单项选择题 The population of the earth（）increasing fast. One third of the population here（）workers.
单项选择题 He, as well as I,（）a student.
