問題詳情
3.Earth Hour is a global event ________ is held on the last Saturday of March every year. People turn off their lights for one hour on that day, hoping ________ CO2 can be reduced to fight global warming.
(A) which； ×
(B) that； who
(C) × ；that
(D) that； which
參考答案
答案：A
難度：計算中-1
書單：沒有書單，新增
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