Does Liu Hui serve in the army? No, but he ___in the army for three years.

Question

如题所述

Answer 1

Does
Liu
Hui
serve
in
the
army?
No,
but
he
has
served
in
the
army
for
three
years.
做题要找到“题眼”，依据。此句“题眼”，是for
three
years。谓语动词一定是完成时态。