选择括号内合适的词，并用其适当形式填空。
(crowd, nine, beside, pick, knife)
1. We're in the _________ grade now. And we will have a very important exam in June.
2. In Britain people not only use __________ to cut things, but also use them to have meals.
3. —Bob, have you _________ up your things on the floor?
—Not yet, Mum. I am still busy with my homework.
4. On weekends, the supermarkets are usually _________ with people.
5. —Excuse me, would you tell me where I can buy some shampoo?
—Sure. _________ the post office, there's a small supermarket.
