问题
选择题
| We are very lucky to live in the . |
A. 21 centuries B. 21st centuries C. 21 century D. 21st century |
答案
答案：D
搜题请搜索小程序“爱下问搜题”
| We are very lucky to live in the . |
A. 21 centuries B. 21st centuries C. 21 century D. 21st century |
答案：D