问题
选择题
When was ___ umbrella __ ,do you know? [ ]
A. ／, invented
B. the, invented
C. an, discovered
答案
答案：B
搜题请搜索小程序“爱下问搜题”
When was ___ umbrella __ ,do you know? [ ]
A. ／, invented
B. the, invented
C. an, discovered
答案：B