We can see that ___ took part in the party had a good time.A.all whoB.all whatC.allD.all which我知道选A,大师谁能讲讲为什么?

We can see that ___ took part in the party had a good time.A.all whoB.all whatC.allD.all which我知道选A,大师谁能讲讲为什么?
We can see that ___ took part in the party had a good time.
A.all who
B.all what
C.all
D.all which
我知道选A,大师谁能讲讲为什么?

We can see that ___ took part in the party had a good time.A.all whoB.all whatC.allD.all which我知道选A,大师谁能讲讲为什么?
that之后引导的是一个宾语从句.这个从句的主语all之后又是一个由who引导的同位语从句来修饰all