The Diaoyu Islands have been part of China’s territory since ancient times, __________ as important fishing grounds of Taiwan.

David got well-prepared for the university interview, for he couldn’t risk the good opportunity ________. 

____ the machine, the engineers paid much attention to the noise from it.

Tom had no trouble at all      the office building according to the note written by Mr. Smith.

(2013·湖南高考)Every day ________ a proverb aloud several times until you have it memorized.