A huge amount of oil was spilt on the Ea
题型:选择题
问题:
A huge amount of oil was spilt on the East Sea, the caused of ______ are still under investigation. [ ]
A. it
B. that
C. which
D. whom
A huge amount of oil was spilt on the East Sea, the caused of ______ are still under investigation. [ ]
A. it
B. that
C. which
D. whom