【正确答案】You should take advantage of every opportunity to study English out of class.

【答案解析】此句主要考查考生对固定词组“out of class(课外)”，“take advantage of sth. (利用……)”及关键词“opportunity(机会)”的掌握。此外，考生容易受汉语表达的影响，将“一切机会”译成不太地道的英文表达“all the opportunities”，正确译法为“every opportunity”。