1. It’s　　    (用来做)for scooping really cold ice cream.

2. 　　    　　　　 (微波炉)are helpful inventions.

3. 　　    　　　　 (灯泡)are invented by Thomas Edison.

4. When were________ _____  (个人电脑)invented?

5. I think _____ ______ _______ _______(最有帮助的发明)is the light bulb.

6. That’s not going to_______ _______ _______ ________ ________(帮助你离开这个岛屿).

7. I think it_____ ______ ______(将会是更好的)to have a mobile to connect with outside.

8. It gives people more time ______ _______ ______ ______(去工作和玩耍)every day.

9. 　　   do you think　　    the telephone　　    (什么时候发明的)?

10. What　　　　     　　  　　　　 (你认为)is the most helpful invention?