6 . The house, ________ door often stays open until late at night，works as a home for the guards，some of ________ are from the countryside.（用适当的词填空）

7 . Our grandma, ________ we called “Nanny”, would always bake bread a day ahead. (用适当的词填空)

9 . 单句改错
1. In addition, the climate here is very similar to that in the USA, thus there is no need for you to worry about it.
2. Although it was not expensive, in order to buy me the gift, but my dad made every effort to earn the money.
3. The reason is often because the pressure from their parents allows them almost no time for other activities.
4. Firstly, we should be given more opportunities to use that we've learned in order to have a better grasp of it.
5. Around 540 million people are affected by second－hand smoke, that causes 100,000 deaths per year.
6. Our class is made up of 52 students, all of them are friendly and hard－working.