一个简单完形问题*词汇辨析) Since then,bungee jumping business have______
一个简单完形问题*词汇辨析) Since then,bungee jumping business have______all over the USA and other places,however in some countries it is not allowed by law. 答案是happened 我选的是appeared,我怎么觉得答案错了啊?到底要选什么?