Theearthwon’tbefitforustolivein
问题详情:
The earth won’t be fit for us to live in _____ we go on polluting it.
A. even if B. if C. unless D. so
【回答】
B知识点:连词
题型:选择题
问题详情:
The earth won’t be fit for us to live in _____ we go on polluting it.
A. even if B. if C. unless D. so
【回答】
B知识点:连词
题型:选择题