Definition: If food goes off, it stops being good to eat because it is too old. Level: B2
如果你不把牛奶放进冰箱，它会变质的。
That milk will ___go ___off if you don't put it in the fridge.
我们不得不投诉牛奶，因为它已经变质了。
We had to complain about the milk because it had ___gone ___off.
面包因为湿度大，仅两天就变质了。
The bread ___went ___off after just two days because of the humidity.
