Do you know( )she has arrived?可以填that吗

问题描述:

Do you know( )she has arrived?可以填that吗

可以啊,你知道她已经来了吗?可是如果和if排成一列选项,应该选哪个?选if吧,一般都选if,虽然我觉得that说出来没错,不过如果是题目的话,肯定选if呢,我也是做过高考的