问题
选择题
— Show me your permit, please.
— Oh, it's not in my pocket. It ________.[ ]
A. might fall out
B. could fall out
C. should have fallen out
D. must have fallen out
答案
答案：D
搜题请搜索小程序“爱下问搜题”
— Show me your permit, please.
— Oh, it's not in my pocket. It ________.[ ]
A. might fall out
B. could fall out
C. should have fallen out
D. must have fallen out
答案：D