invent, hard-wearing,Korea, airplane, bulb

1. —How do you usually go to America for your vacation?

——I usually take an      there.

2. My mother bought me a pair of jeans.They're nice and      

3. People should use efficient       at home. It can save much electricity.

4. —Do you know when the radio was____  ？

  —Around 1895.

5. The Yalu River lies between China and     

1. airplane 2. hard-wearing 3. bulbs

4. invented 5. Korea

題目來源：仁愛英語同步練習冊九年級上冊下冊合訂本 > Topic1 When was it invented?

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