Their water isn't good to drink.这里的to drink是什么成份,

Their water isn't good to drink.这里的to drink是什么成份, why isn't their water good to drink? Their water isn't good to drink中to dringk是哪种类型的补足语? The water here isn‘t good to drink The water isn't clean enough to drink.(改为同义句） The water is _ the water isn't fit______.A,drinking B,drunk C,to drink D,to The water isn't high enough for him to drink.是什么意思? 快!急用! The water isn't cold enough to drink 改为同义句 it is good for you to drink more water and less coffee(she t This water isn't good to Do you drink water every day?It's good to drink a glass of w Ben is [t ].He wants to drink some water.