In China when caught, those corrupt(腐败的) officials are sometimes limited to _________ in a certain place, only __________ their problems within an appointed time(规定的时间).
Had it not been for the fact that about 30 pupils __________ in the state of Connecticut a fortnight ago, their parents ___________ in deep sorrow now.
Experts have found that the disease will lead to a greater increase in the number of sufferers unless ________ seriously when the symptom first appears.