根据句意和汉语提示写单词。
1. Even the simplest everyday activities can _______(减少) pollution.
2. I think it’s _______(必要的) for us to master(掌握) a foreign language.
3. My computer doesn’t work. I have to get somebody to _______(修理) it.
4. We should _______(关心) for our parents. It’s the right thing for us to do.
5.- Would you please _______(挑拣) out some bigger apples for me?
- Of course I will.
6. We’d better take our own cloth bags when we go shopping instead of using _______(塑料制的) bags.
7. Petrol(石油) is the most important _______(产品) of many Middle-East countries.
8. Wood and stone are the only raw(未加工的) ________(材料) on the island.