10. Jane is doing some cleaning this time yesterday.

B级　 单项单句改错

9. She has gone to Beijing several times.

8. I haven't seen her since two months.

7. I am looking at the sky, and I see a strange star.

6. He can't be waiting us.

5. He was writing a letter at the moment, I believe.

4. Does your mother has lunch at home?

3. I will get everything ready before my boss come back.

2. I will speak to him when I will see him next Sunday.

1. The teacher told that the sun rose in the east.