1、They knew her very well. They had seen her ___ up from childhood.
A. grow B. grew C. was growing D. to grow
答案：【A】句子意思： 他们看着她从小孩子到长大成人。
【因此本句感官动词seen强调的是小孩成长的整个过程，因此用see sb do 的句型。】
2、The missing boy was last seen ___ near the river.
A. playing B. to be playing C. play D. to play
答案【A】. 句子意思：有人发现那个失踪男孩正在河边玩。
【感官动词seen强调被人发现的男孩正在河边玩，当时的现场状况，因此用see sb. doing 句型。】
