They have a meeting every Monday, there is nothing to discuss. [ ] A．whenB．since
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They have a meeting every Monday, ________ there is nothing to discuss.
[]
A．whenB．sinceC．unlessD．as
试题答案
答案：
They have a meeting every Monday, ________ there is nothing to discuss.
[]
A．whenB．sinceC．unlessD．as
答案：