【陳奕雯】評論
withdraw into somethingto pull back into something. The turtle withdrew into its shell. The mouse withdrew into its hole.
【羅逸昇】評論
relapsed 似乎也可以耶
【Hsu Baleng】評論
此題選withdraw 是較好的答案,題目說John是話不多的人,所以解釋完他的觀點後就退回沉默;而relapse雖然有再陷入,退回的意思,但是通常是用於回復 [到以前的不良狀態] ; 再陷入 [邪惡、惡行之中] ,再墮落 [退步],有負面的意思