问题
选择题
They have not made any decision on _____ they are going to do to deal with the waste and control pollution. [ ]
A. what
B. whether
C. which
D. that
答案
答案：A
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They have not made any decision on _____ they are going to do to deal with the waste and control pollution. [ ]
A. what
B. whether
C. which
D. that
答案：A