问题
选择题
We will go climbing _____it_____ tomorrow. [ ]
A. if, rains
B. if, will rain
C. unless, rains
D. unless, will rain
答案
答案：C
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We will go climbing _____it_____ tomorrow. [ ]
A. if, rains
B. if, will rain
C. unless, rains
D. unless, will rain
答案：C