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INTERMEDIATE LEVEL

like: Có một chuyến tàu lúc mười giờ ba mươi. Đó là một chuyến tàu cao tốc. → →

There's a train at tthirty (10:30). It's an express train. ☊

Có một chuyến tàu lúc mười giờ ba mươi. Đó là một chuyến tàu cao tốc. ☊