Put DO or DOES into the following sentences to make questions

Ex 7: Put DO or DOES into the following sentences to make questions
1. …………..……the students study hard every day?
2…………….…Mr. Brown go to his office every day?
3. ………………..you want cream and sugar in your coffee?
4. ……………..…the children go to bed very early?
5. ………………...that girl come from South Africa?
6. ………………you know that Italian student?
7. …………….. Miss Lan prefer coffee to tea?
8. ………………..your English lessons seem very difficult?