-----Hi Peter. Long time no see.-----Oh it’s you Jack. I’m sorry I didn’t you at first.

问题补充：

-----Hi, Peter. Long time no see.

-----Oh, it’s you, Jack. I’m sorry I didn’t you at first.

A. know

B. recognize

C. remember

D. realize

答案：

A. know

(答案→)B. recognize

C. remember

D. realize

解析：词义辨析。know知道；recognize承认，认出；remember记得；realize意识到。句意：hi，皮特，好久不见。是你。抱歉刚开始没有认出你。所以选B。