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15) The house was too expensive for us to buy.
-> So ...
-> So ...
Ở trên là us thì chủ ngữ là we nhé bạnThe house was too expensive for us to buy.
-> So the house is expensive that I can't buy
$\Rightarrow$ So expensive was the house that we couldn't buy it.15) The house was too expensive for us to buy.
-> So ...
15) The house was too expensive for us to buy.
-> So ...