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题目内容
（佳木斯大学语言治疗学）
WheI tried to find _______that prevented so many people from taking part ithe program, itseemed to me that there were two maireasons.( )
·why it did
·that it did
·what it was
·why it was
·why it did
·that it did
·what it was
·why it was
参考答案
