(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.

(busy   swim   hard   three   ourselves)
1. Father's day is on the _________ Sunday in June.
2. The traffic during the rush hour is much _________ than usual.
3. We must learn to look after __________ when we are alone at home.
4. _________ is good for health.
5. When I got to the top of the high mountain, I could __________ walk any more.