Đáp án :
The water was so cold that the children couldn't swim in it.(enough)
`=>` The water wasn't warm enough for the children to swim in
Giải thích các bước giải :
* Cấu trúc "enough" :
S + tobe + adj + enough + (for sb) + to Vinf ...... ( Với động từ tobe )
hoặc S + V + adv + enough + (for sb) + to Vinf ........ ( Với động từ thường )
VD : She isn't tall enough to reach the top of the wardrobe
She didn't do the test well enough to get 10 point