Question

(18) the / stars / sky / twinkle / the / in / at /
night
(19) reveal / universe / could / the size / this / of
the
(20) flecking / scientists / the / stars /say/
that / of the / distance / indicates
(21) astronomers / this / allow / should / to /
distances / measure​

Answer 1

18 ) stars Twinkle at the night in the sky

19) this could reveal the size of the universe

20)

21) this should allow astronomers to measure distances

Answer 2

18. The stars in the sky twinkle at night

19.could reveal the size of this universe?

20.scientists say that the distance of the stars indicates flecking.

21.This should allow astronamers to measure distances