—I think you can money by yourself to buy a present for your mother.—OK. I’ll try. I’ll

—I think you can money by yourself to buy a present for your mother.
—OK. I’ll try. I’ll not let a penny waste.
A. spend
B. save
C. cost
D. leave

A. spend(答案→)B. saveC. costD. leave解析：根据I’ll not let a penny waste“我将不让一分钱浪费掉。”可知，应该是“节省钱”。Save money是“节约钱”的意思。而spend是“花费”，cost是“花费”，leave是“离开，留下”。所以本题选B。

我也是这个答案