Organic food is produced from crops _____ chemicals, pests and so on. In one word, it is free frompollution of any kind.[ ]

.They thought about it for a long time, but still couldn’t ________ a solution.

My parents usually take a walk ______ dinner to keep healthy.

I don’t care ______ we have for dinner if I don’t have to cook it.

oice of China has set up a big stage for young people with a talent for music, ________ some of them have stood out among others