Fill in each blank with one of the two words from each pair in their appropriate forms and note the difference of meaning between them. restraint constraint 1、Options are offered subject to staff availability and timetable . 2、Reminding all concerned that violence breeds violence, they repeat their appeal for calm and . 3、The appalled chief warned his violent officers to show . 4、We have just been looking at the number of coal mine accidents, and they can certainly be a big on what China is striving for.