你认识这个人吗？

Do you ___know this person?

你认识这位新来的老师吗？

Do you ___know the new teacher?

我可以通过他们的笔迹分辨出这两个学生。

I can ___tell these two students apart by their handwriting.

她知道如何修理自行车。

She ___knows how to fix a bicycle.

我知道他今天会来参加会议。

I ___know he will attend the meeting today.