21. Vince decided to move down south where it’s sunny most of the time because he was fed up with the
high ___ in northern Taiwan.
(A) activity (B) living cost (C) crowdedness (D) humidity
<補充> fed up bored, annoyed, or disappointed, especially by something that you have experienced for too long 厭倦的;厭煩的;失望的 I'm fed up with my job. 我厭倦了我的工作。 He got fed up with all the travelling he had to do. 他煩透了他無法避免的各種旅行。 - humidity n. 濕度,潮濕 記法:humid (wet) + -ify (變成) =使潮濕