1. Plans for an extension to the ISS have been drawn by American scientists
2. He askes if/whether NASA could prove that there was life on a moon of Jupiter
3. The student asked " How long does it take to get to the red planet"
4. When Sarah arrived at the office, Paul had left
5. The plane was prevented to take off on time from the heavy snow
6. My parents asked what time I had got home the previous night
7. Lucy might not be at home now
8. NASA hasn't sent humans to the moon since 1972
9. She said that they were meeting Tony at 8 o'clock that night
10. Sam said to me "I am very tired now because I have been working hard for 12 hours"
