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

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

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

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

B SPENT STH IN DOING STH 固定搭配
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