第1个回答 2009-10-15
In his master's study, he was involved in the project research.
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第2个回答 2009-10-15
While he was studying for his Master's degree,he involved himself in the reserch本回答被提问者采纳
第3个回答 2009-10-16
In his master's study, he was involved in the project research.
第4个回答 2009-10-15
In his master's study, he participated in the project research work