Question

Use the third conditional to give possible answers to the following questions:

If the lander hadn't had a camera installed in it, what wouldn't people on Earth have been able to see?

What wouldn't the astronauts have been able to do if they hadn't had space suits with life support systems?

what might have happened if the astronauts and lunar samples hadn't been placed in quarantine after returning to earth?

Answer 1

if  he had stalled the camera, people would have  seen  the earth  form.
if they hadn´t have space suits, they would have died 
if they hadn´t been in quarantine, they would  have passed a virus or a illnes to  their relatives.