问题
选择题
It was not until Tom took off his dark glasses that I _____ him.
A．recognized
B．knew
C．discovered
D．realized
答案
答案：A
题目分析：考查动词。A recognized辨认；B knew知道；C discovered发现；D realized意识到。句意：直到汤姆摘掉墨镜，我才认出他来。故A正确。