——What’s your problem? ——I have lost sight of my morn and dad, but just I saw th

游客2023-10-06 6

问题 ——What’s your problem? ——I have lost sight of my morn and dad, but just I saw them ______ in front of me.

选项 A、were walking
B、to have walker
C、walk
D、walking

答案 D

解析感官动词see，hear等后面可以跟两种宾语补足语的形式，即see(hear)+do/do ing sth．前者表示看到或听到某事的全过程，而后者表示看到或听到某人正在做某事。本题表示看到正在进行的动作，所以用动词现在分词形式。

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