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Even though Tom _____ Chinese for three years before he came to China, it is sti
Even though Tom _____ Chinese for three years before he came to China, it is sti
游客
2024-06-20
48
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问题
Even though Tom _____ Chinese for three years before he came to China, it is still difficult for him to express himself.
选项
A、studies
B、has studied
C、had been studying
D、was studied
答案
C
解析
本题考查动词的时态。句中含有一个before引导的时间状语从句,从句部分谓语动词为一般过去时,主句部分应该用过去完成时或过去完成进行时,即had done或had been doing,其中had been doing表示动作持续到过去某一时间还在延续。因此此处选C。
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