I'm not sure()( 至今)

I'm not sure()( 至今) I'm not sure I'm not sure 快 I'm not sure yet. I'm sure I am not wrong 有没有I’m not too sure? NOW, I'm not sure 什么意思 为什么没有I’m not too sure? I'm not sure when I should go.同义句 I'm not sure when( )( ). I'm not sure yet还是I'm not sure either?如题,寻求原因 I'm not sure what's playing, I hedged. I'm not sure what I should expect（改为简单句） I'm not sure ___ ___ expect I'm not sure where I should go.的同义句 I'm not sure where （ ）（ ）. I'm not sure what I should expect.（改为同义句） I‘m not sure what ____ ____. I'm not so sure about that...的中文翻译 Tom _____ at hom ,but I'm not sure. I;m not sure what____(buy)for his birthday. I'm not sure what______(choose)for him