l didn't know what to say中didn't为什么用过去式

l didn't know what to say中didn't为什么用过去式 I didn't know ( )to say.为什么填“what to say” I didn't know what there was to say regardless. i didn't know what should say to my teacher I didn't know what I should say 用 what to do 替换 翻译 You didn't know what I was gonna say. __________at the news that I didn"t know what to say to comf Why'd you have lied to me I didn't know what to say ... He didn't know what to do next.He didn't know what he ____ _ I was so suprise ,and didn't know what to say 这是哪首歌里面的词, The __（thank）mother didn't know what to say Tom,____at the exam result,didn't know what to say