Professor Bill had begun taking ______ research work when he was in high school.
A.
to do
B.
doing
C.
to doing
D.
having done
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【单选题】Culture is the sum total of all the tradition, customs, beliefs, and ways to life of a given group of human being. In this sense, every group has a culture, however savage, undeveloped, or uncivilized...
【单选题】Culture is the sum total of all the tradition, customs, beliefs, and ways to life of a given group of human being. In this sense, every group has a culture, however savage, undeveloped, or uncivilized...
【单选题】Culture is the sum total of all the tradition, customs, beliefs, and ways to life of a given group of human being. In this sense, every group has a culture, however savage, undeveloped, or uncivilized...