单项选择题
None of his arguments seemed to me to（）.
A.hold upB.hold waterC.hold onD.hold over
多项选择题 光气及光气化中，装置设有多套安全联锁系统，紧急停工是在事故状态时导致紧急泄压系统自动或手动触发。紧急停工的原则有：（）等。
单项选择题 I don't know why he is about to make a（）over a few pounds.
单项选择题 Do you（）taking these goods without paying for them？
