Jack spent as much time as he__the Chinese language A.Could learning B learnedC could learn D had learned 要写理由

问题描述:

Jack spent as much time as he__the Chinese language A.Could learning B learned
C could learn D had learned 要写理由

选A.
首先spend as much time as he could表示他花费尽可能多的时间,could是这个词组的一个部分;其次,spend time (in)doing sth是一个固定用法.