Viết lại câu: Have you gone to school late before? Have you ever played a computer game before?

Viết lại câu:
1. Have you gone to school late before?
=>Is this.....
2.Have you ever played a computer game before?
=>Is this....
3.Is this the best price you can offer?
=>Can't you....
4.He hasn't come back to his village for ever 20 years ago
=>It's....