3．We have already read and written. (改为否定句)

　We ________ ________ ________ written ________.

2．We can store a lot of information in the computer. (改为被动语态)

　A lot of information ________ ________ stored in the computer.

1．Alice attends the lecture once a week. (改为否定句)

　Alice ________ ________ the lecture once a week.

10．I don’t think you have done it, ________ ________?

9．What a clever boy, ________ ________?

8．Don’t open the window, ________ ________?

7．Let’s go to school, ________ ________?

6．You’d better put on your coat, ________ ________?

5．This isn’t a good pen, ________ ________?

4．Someone went there, ________ ________?