应该选C
( __________ to sunlight for too much time )will do harm to one's skin.括号内是句子的主语,而选项中只有动名词能做主语.所以这是动名词的被动语态 being done.用A选项是构成过去分词短语,不可以作主语.
应该选C
( __________ to sunlight for too much time )will do harm to one's skin.括号内是句子的主语,而选项中只有动名词能做主语.所以这是动名词的被动语态 being done.用A选项是构成过去分词短语,不可以作主语.