题目

 --- I wonder if Tom _______ this afternoon.  ---Don’t worry. I will tell you as soon as he _______ .  A. will come; came  B. comes; will come  C. will come; comes  D. comes; came   C 答案：C15．150的$\frac{3}{5}$是90，一个数的$\frac{5}{8}$是450，这个数是720．