1) If planet Kepler 22b had the right atmosphere and temperature, it _______ life. a) will support b) supports c) supported d) could support 2) If astronauts __________ other solar systems, we could learn a lot. a) explores b) explored c) will explore d) are exploring 3) If I had a telescope, I __________ the stars and planets. a) see b) could see c) saw d) will see 4) If I __________ an expert, I would find a solution to the problem. a) were b) may be c) am d) will be 5) If I _______ an astronaut, one day I could go to Mars! a) will become b) am becoming c) became d) becomes 6) If private companies __________ a lot of money , they would pay to help space exploration. a) will make b) is making c) made d) Makes 7) The astronomer __________ a space researcher if he had a lot of talent. a) will be b) Was c) Were d) could be 8) You don't __________ study engineering if you want to be an entrepreneur. a) must b) need to c) Should d) have got 9) If the sun __________ smaller, we would not have enough light. a) will be b) are c) Is d) was 10) If my brother was an astronaut, he __________ to the moon. a) would go b) goes c) went d) will go

If / unless ( 2nd conditional )

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