请教has及have在句子中是否发音

问题描述：

请教has及have在句子中是否发音
which has since been sent to a museum where it is/weərits/ being examined by a scientist,is called an oarfish.Such creatures have rarely been seen alive by man as they live at a depth of six hundred feet.
这是新概念二册82课中的两句,我没听出来has及have发音了,是不是在长句子中has及have可以不发音.
我仔细听了好多遍，都没听出来她发音了啊。