Question

【题目】 The old man who is Tom’s grandfather is seen ______ along the bank of the river

every morning.

A. run B. to run C. running D. to running

Answer 1

【答案】B

【解析】

试题分析：句意：那个是汤姆祖父的老人被看到沿着河岸跑步。see sb do sth,看到某人做了某事，变成被动结构，省略的动词不定式符号to 要加上。根据该句是被动结构，故选B。