—Jim you said you'd lend me your MP5.—I'm sorry I forgot my promise but you have it next

问题补充：

—Jim，you said youd lend me your MP5.

—Im sorry I forgot my promise but you have it next Saturday.

A. must

B. may

C. need

D. shall

答案：

A. must

B. may

C. need

D. shall

解析：句意：——吉姆，你说过你要把MP5借给我的。——对不起我忘记了，下周六我借给你。shall表示许诺，符合题意。答案D