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

Does Liu Hui serve in the army?No,but he ___in the army for 7. —Does Liu Hui serve in the army? —Does Liu Hui serve in the army? --Dose Liu Hui serve in the army? 1.-Does your brother serve in the army? serve in the army和join the army的区别 he has been in the army for five years he has been in the army for 2 years. He (has been in the army)for 3 years. He ________ the army for ten years. he served in the army in_______ He in the factory for three years before he joined the Army.