Choose the correct form to complete the paragraph.
To learn about the effects of microgravity, NASA researchers studied how
one year of living in space affected an astronaut’s mind and body.
one year of living in space affected an astronaut’s mind and body.
The
astronaut’s thinking remained mostly clear, and he 1)
to suffer few problems.
astronaut’s thinking remained mostly clear, and he 1)
seems
/
seemed
to suffer few problems.
He did experience bone loss and muscle weakness,
but it seemed that these problems 2)
returning to Earth.
but it seemed that these problems 2)
to go away
/
went away
soon afterreturning to Earth.