A panda,_____you all know,is a loveiy animal

A panda,_____you all know,is a loveiy animal
A.that B.as C.which D.what
翻译成“正如”,这个明白
但是which可以译成“这一点”,放在句子里也翻译的通,
例如书上写的The elephant is like a snake,as/which anybody can see.
讲解还说which不能放在句中,我记得which只是不能放在句首,句中可以,
例如书上写的：The basketball team,which is playing very well,will come out first.