(1)Dolphins are very smart.　　　　　　　　　　　　　. 　　
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1. We            told to be ready at ten o'clock.
2. The police are looking for a man who            thought to be dangerous.
3. The 1948 Olympic Games            held in London.
4. Rice            grown all over Asia.
5. Most people            paid at the end of the month.
6. Thousands of gadgets            invented every year.
7. The Live Aid concerts in England and America            watched by millions of fans.
8. Camera            often used when people travel.
9. Milk            had as main food for babies.