How dark it was!It was so _____ that he was very careful and afraid.

问题描述:

How dark it was!It was so _____ that he was very careful and afraid.
能不能推断出改填什么?

dark.
前面一句话是感叹天很黑.后一句话补充说,天如此之黑,使他都很小心很害怕.