There is a real possibility that these animals could be frig
There is a real possibility that these animals could be frightened,__B__ a sudden loud noise. A.being there B.should there be C.there was D.there having 答案是第二项,可是不明白这里为什么选它,这是什么结构,那位帮帮我呀.
that these animals could be frightened这个是个同位语从句。后面的should there be a sudden loud noise.是个从句。是个虚礼语气=if there should be a sudden loud noise.翻译为万一这里有突然地噪音的话,那么这些动物受到惊吓的可能性就很大。