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INTERMEDIATE LEVEL
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to know beforehead, know ahead of time ☊ 
biết trước ☊
→ → →
OXF3000: 
biết trước 
anticipate
OXF3000N báo cho biết báo cho biết trước advertise
like: biết trước → →
We'll know before long (= soon). ☊ before ☊
It is reasonable to assume that he knew beforehand that this would happen. ☊ reasonable ☊