【单选题】I really don't know ______ about it. [ ]
【单选题】I want to know ________ next.
【单选题】加拿大人忌送(),因其主要用于悼念死者。P333
【单选题】I don't know ______________ next. [ ]
【判断题】条据签订以后,一般要经过法定的公证程序,才对签约的各方有约束力,特别是经济性质的条据。
【单选题】I don't know _______. [ ]
【单选题】I don't know _____ next. [ ]
【单选题】I don't know _____ it next. [ ]