The exam was continued at the beginning of the new term,____

选as,关系代词as代替整个主句,并在从句中作主语.as引出的从句为非限定性定语从句.
再如：
She has married again, as was expected.
她已再婚,这是意料中的事.
We are tired, as anyone can see.
我们累了,这是有目共睹的.
which和as都可在非限定性定语从句中代替整个主句,这就要从意思上考虑.as还有如……那样的意思.The exam was continued at the beginning of the new term是一件事实,这个事实是可以announced的吗?只能说如……所宣布的那样,……继续进行了.

which
非限定性定语从句咯
AS的话前面需要有the same等等的提示的撒
which指代“The exam was continued at the beginning of the new term”

答案which
因为这是定语从句，先行词是前面的整个句子，所以引导词只能是which
并且因为有逗号，所以是非限定性定语从句，所以，引导词只能是which

which,代前边所述的事件，as的话少个主语，加个it就可以了，但是句意还是不明确，没有直接用which简单明了