题干
双方的商讨已经破裂，哪一方应负责还不清楚。
Discussions between the two sides have ____ ____. It is not clear which side is ____ ____
答案(点此获取答案解析）
broken,up/down,to,blame
双方的商讨已经破裂，哪一方应负责还不清楚。
Discussions between the two sides have ____ ____. It is not clear which side is ____ ____
,则f（
）等于（ ）