1.---I am going to the post office.---___ you are there ,can you get me some tea?A,As B,While C,If2.___is no reason for dismissing her.A,The fact that she was a few minutes late.B,Being a few minutes late .为什么?第一题中as是既然的意思我选的A？第二题中，B项动名词作主语为什么不可以。我是知道答案滴

1.---I am going to the post office.
---___ you are there ,can you get me some tea?
A,As B,While C,If
2.___is no reason for dismissing her.
A,The fact that she was a few minutes late.
B,Being a few minutes late .
为什么?
第一题中as是既然的意思我选的A？第二题中，B项动名词作主语为什么不可以。
我是知道答案滴