1. … I take a seat here?

2. If I was a billionaire, I … travelled to space by spaceship.

3. The right path is difficult to take, you … want to take the left path.

4. You can't meet the CEO right now, he may … the investor conference.

5. The sky is getting darker and darker, it … rain right now.

6. I agree with him about this case. He might … right about the challenge that we face up.

7. Mike may … because he has worked for nearly 10 hours.

8. Where is Diana? → She … have gone out with John.

9. If I knew you sooner, we … join the local youth soccer team together.

10. Teacher, …?

11. I have a present that you …

12. We thought that we … come home this weekend.