单项选择题
The above-mentioned damage has caused from improper fitting so that we （） you （） for making compensation.
A.hold；responsibility B.ask；responsibility C.hold；responsible D.require；responsible
单项选择题 It has something （） with poor workmanship and assembly, doesn’t it?
单项选择题 The certificate for the refrigerating plant will（）soonI’d like to extend its validation now.
单项选择题 （）, remedies must be taken to stop it as early as possible.
