单选题 Fear ______ us as we approached the old castle which was believed to be ghost-haunted.

【正确答案】 A

【答案解析】[解析] 句意：在靠近这座传言闹鬼的古老的城堡时，我们突然感觉非常恐惧。come upon突然产生。come by从……身边经过。come before来之前。come between离间。