Vietnamese Tutor













Most Common Compounds Set 1:


Most Common Compounds Set 2 :










Bài toán này rất khó .
这道数学题很难。



This math problem is very difficult .

Dieses mathematische Problem ist sehr schwierig 0

Bài toán này rất khó .

这道 数学题 很难
Zhè dào shùxué tí hěn nán.


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