1. You must write a s__________ at the end of the letter so that they can know who writes the letter.
2. My father is the manager of the company, so he a__________ lots of meetings every day.
3. What number should you d__________ when there is a robbery?
4. A__________ are an ancient invention of China. They are so fast and accurate that people still use them today.
5. Disneyland, which was created by Walt Disney, is a famous a__________ park in the United States of America.
6. Trees are __________ (nature) air conditioners, for they can take harmful gas from the air, and release oxygen into the air.
7. We should try to make a __________ (different) to make our world more beautiful.
8. Wendy is really a whiz-kid. She can achieve A __________ (grade) in all subjects.
9. 20 __________ (multiply) by 6 is equal to 120.
10. We all like a peaceful world. We want to live __________ (peace) with all the living things.
1. signature 2. attends 3. dial 4. Abacuses 5. amusement
6. natural 7. difference 8. grades 9. multiplied 10. peacefully