a. 令人厌恶的

disgust/disgusting/tiresome/embarrass/embarrassing
记忆：
1. disgust [ dis5^Qst ] dis-gust n. 厌恶, 嫌恶vi. 令人厌恶, 令人反感 The food disgusted me. 那食物让我恶心。
2. disgusting [dIs`^QstIN] adj. 令人厌恶的 His behaviour is disgusting. 他的行为让人厌恶。
3. tiresome [ 5taiEsEm ] adj. 无聊的, 烦人的 When can I break away from such a tiresome job?我什么时候能摆脱这样无聊的工作？
4. embarrass [ im5bArEs ] em-bar-rass em,in, 在里面；bar, 酒吧；rass，拉丝；embarrass，趣味联想：在酒吧里拉丝突然坏了，令人尴尬。 vt. 使困窘, 使局促不安 Meeting strangers embarrassed the shy child. 见到生人使这害羞的孩子局促不安。
5. embarrassing [ im5bArEsiN ] adj. 令人为难的 It’s embarrassing to miscall a friend. 把朋友的名字叫错令人难为情。
另类阅读：
They were discussing a disgusting topic. It’s embarrassing for me to tell them that I had no interest in such a tiresome topic.