【多选题】项目经理部在调査处理伤亡事故时,必须坚持( )的原则。
【单选题】I don't support that anyone will finish on time, _____?
【单选题】I don't think little money that he earns can support such ______ big family. [ ]
【单选题】— Thank you for your support. I really appreciate it. — ______. [ ]