-----Have you been to New Zealand? -----No, I’d like to, _____.

Fortunately somebody who happened to be passing by called the emergency aid        the traffic accident occurred.

The clerks were at work so ____ that nobody realized it was already lunch time.

Mr. Lin’s comments were very difficult to follow because they were ______related to the topic under discussion.

After two years' research，we now have a ________ better understanding of the disease.(2013·全国Ⅱ)