C. supposing to have been written D. supposing to be written 4. The money with which you were to buy dog food is gone, but Spot looks so hungry! 让你们用来买狗食的钱已经花光了,可是斑点看上去还是这么饿! “be + 不定式”结构 (1) 表示“将来的安排,将来...