We have spent nine years___Chinese.

问题描述:

We have spent nine years___Chinese.
A,on learn B in learning C to learn D learn

应该填写
B
spend some time in doing sth 花费 时间做某事
我们已经花了九年时间学语文on sth不也是对的么也有spent on sth这种结构,但on后面必须跟名词,而learn是动词,所以不用能用on~~~~~~~~~~~~~~~~祝你进步,如对你有帮助,请及时采纳~~~~~~~~~~~~~~~~