【单选题】Can I take Lisa to the aquarium tomorrow? If she ________ there, she _______ a good time. [ ]
【简答题】当前世人关注的全球大气污染问题有三个,即:____、____、____。
【单选题】I don’t know if she to the movie. If she ,I’ll tell you.
【单选题】交易效用指出,人们评价商品的某一个定价时,参考的是
【单选题】Steady as she goes!()
【单选题】按照( )体系标准,对现场试验工作进行管理,并建立相关制度。
【单选题】-Mona works really hard. -I agree. ___________she is ill, she still goes to school.