问题
选择题
| We'll have a picnic in the park this Sunday _____ it rains or it's very cold. |
A. since B. if C. unless D. until |
答案
答案：C
搜题请搜索小程序“爱下问搜题”
| We'll have a picnic in the park this Sunday _____ it rains or it's very cold. |
A. since B. if C. unless D. until |
答案：C