I was so______on my study that I didnt notice the time.
A. preoccupied
B. intent
C. engrossed
D. absorbed
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企业想要获得更多销售额和利润，需要()
A. 提供能满足顾客需求的产品或服务
B. 为顾客创造感知价值
C. 与顾客建立稳固的关系
D. 以上都是
All the following sentences have an appositive EXCEPT______
A. He behaved himself fairly well when he was at college.
B. Playing football, his only interest in life, has brought him many friends.
C. Most visitors reach Scotland from the south, that is, from England.
D. Her face was very pale, a grayish pallor.
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