2. I can’t understand what she is speaking. She’s almost incoherent. 
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Sửa:

3. Today I’m going to tell about my last holiday in Japan. 
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Sửa:

4. I can talk three languages fluently, but Vietnamese is my mother tongue.
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Sửa:

5. I learned Chinese from a textbook, so I don’t really understand it when it is said. 
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Sửa: