【简答题】I have to delay _________ the letter.
【单选题】I quickly answered your letter, for, if I delayed, you _________ I was not concerned about your difficulties. [
B.
] thought [ C] would think [ D] were thinking
【简答题】I'll write back as soon as I __________your letter.
【判断题】库存不能脱离计划而存在,库存是计划的结果。