题目内容
--It’s reported that the new underground line has been completed.
--Yes, but it hasn’t been made clear ________ it’s to be opened to traffic on time as planned.
A. that B. when C. what D. whether
D
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题目内容
--It’s reported that the new underground line has been completed.
--Yes, but it hasn’t been made clear ________ it’s to be opened to traffic on time as planned.
A. that B. when C. what D. whether
D