1.He has a rich____________________(know) of history.

2.Is he writing a new computer __________________(instructions used to control computers) in the computer room?

3.I’d like to recommend this ____________ magazines to all the teachers.(教育的)

4.There’s something wrong with the computer. You should __________(start again) it.

5.A _____________ is a person who designs how something will look.

6.Is English spoken___________(wide) in the world?

7.His feet are even_____________(痒的) than before.

8. Can you help me o__________ a package online?

9. I don’t know how to use a __________(个人的) computer.

10. Did you check the __________(set)?

11. Many students use computers in their __________(day) lives.

12. A high school student studies lots of c__________ at school.