The college principal promised to look into the matter.

学院院长答应研究这个问题。

She was thinking over what she had heard about Heidi, making up her mind to look into the matter.

她正在仔细考虑着她所听到的关于海蒂的事情，决定调查一下这件事。

We'll look into the matter first before coming to a decision.

我们先研究一下，然后再作决定。

I'll look into the matter.

我会调查这件事的。

I will look into the matter.

我会调查此事。