Being an austronauts is a very interesting job, but it can 1. (Also . 2.too .3. always) be dangerous.
Austronauts have to be good 2. (With 2. Of 3. At) science and maths and they must think 3. (1.qucker 2. quickly 3. quickest) when there's a problem.
Austronauts travel in rockets and learn 4. (1. to eat 2. eating 3. ate), get dressed 5. (1. brushed 2. brushing 3.brush) their teeth and even sleep in a rocket.
Austronauts wear special clothes. The is because it's much colder in space 6. (1. That 2. Than 3. Then) on Earth.