Our teacher suggests us that watching TV at most hour a day during the winter holiday.
A. the; a
B. a; an
C. 不填; a
D. 不填; an
网友回答
A. the; a
B. a; an
C. 不填; a
(答案→)D. 不填; an
解析：句意:我们的老师建议我们在寒假期间看电视最多每天一个小时.结合语境可知前文为短语at most最多,不超过,故不用冠词.下文泛指任何一个小时,故用不定冠词,hour词首音素是元音,故不定冠词用an.选D.