题目内容
20. 电话是什么时候被发明的?
When the telephone ？
20. was;invented
17. The calculator was invented after the computer.(改为同义句) The computer was invented the calculator.
7. Tea,the most popular drink is an (accident) invention.
4. It Took us about two months to complete the p last year.
( ) 15. Welcome to our clothing store. Wv. have many ____ of skirls.
A. styles B. sizes C. colors D.bills
5. 丁he water should (not put) here.
12. We should clean our teeth twice a day.(改为被动语态）
Our teeth should twice a day.
( ) 9. I'll finish the job, how long it takes.
A. until B. unless
C. no matter D. even though
5. 他在两年内修完了学位。
He his in two years.
