$30. If we \_ adequate preparations, the conference wouldn$’t have been so successful.
Answer key
D
If we _ adequate preparations…——2012 高考英语第 30 题答案解析
2012_省自主命题（山东）
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2012_省自主命题（山东）
$30. If we \_ adequate preparations, the conference wouldn$’t have been so successful.
D