下列各项中加点字的解释不正确的一项是（ ）

How could you be so rude as to walk in here in the middleof my class—_____________

elevision was first introduced, the extent_______ it would affect society could not have been foreseen.

I always look _____ those who never look _____ others, even though they have achieved great achievements

been raining for a day, but eventhough it hadn’t rained, we _____ there by tomorrow.