Correct form 1._____________the light suddenly came on although no one was standing near the switch. (mystery) 2. China became the third country in the world to be able to____________carry out manned space flights. (depend) 3. If there was a_________failure, Gagarin might never get back to the Earth (technic) 4. To be able to work in the space, the astronauts have to get use to_______ (weight) 5. Make___________that you lock the door if you go out (certainly) 6. Administrative work________half of my time (occupy) 7. She has taken an _____________interest in the project (avidity)