Помогите пожалуйста ​

помогите пожалуйста!!!

какой корень в слове ИДЁШЬ?

я во всех сайтах лазела и нимогу найти. 

Use the right prefixes to form suitable words: 1. A lot of european countries are ... (dependent) 2. People who speak two languages equally well are called ... (lingual) 3. Snail mail is ... (efficient) compared to electronic mail. 4. A lot of ...(appearing) languages are being replaced by english. 5. There was a big...(complete) to take part in this concert. 6. ...(globalisation) budinesses often have their offieces in different parts of the world. 7. we are proud of our amazing ...(achieve) in nuclear physics. 8. a ...( wealth) bussinessman bought this house for five million dollars.