1.why is there so much ice in it? maybe you didn’t close the

1.why is there so much ice in it? maybe you didn't close the door tight.
everybody knows it is important to keep the doors of a fridge closed, （nobody left it open.）请问括号内的这句话怎么译?
2.there is nothing wrong with keeping a snoke if you like it.请问此句中的 with 是什么意思,能去掉吗?
3.A goldfish can weigh up to 40 grams. this box weighs five kilograms.请问weigh up 和weigh的区别.谢谢

Nobody left it open.(没人让它开着）leave sth +形容词 使某物（处于某种状态）
with不能去除,There's something/nothing wrong with.为固定句型
不是weigh up,而是up to （达到）,weigh up to.重达.A goldfish can weigh up to 40 grams.(金鱼能重达40克.指最大值）,this box weighs five kilograms.(这盒子重5公斤,指目前情况）