【单选题】Calvin Klein is one of the top________ in the world.
【简答题】He has been ill _____ three years.
【单选题】Calvin Klein is one of the top ________in the world.
【单选题】He has been ill with a strange disease lately, ______I’ve never heard of before.
【单选题】He has been ill with a strange disease lately, ______I’d never heard of before.
【判断题】乘务员可以在有需要的情况下打开应急医疗箱,取出并使用箱内的相关物品。