He_____for twenty years.A.has joined B.has been in the army

He_____for twenty years.A.has joined B.has been in the army he ___for three years.A has joined the army B has been in th He____for three years A)has joined the army B) has been in t James ( ) for three years.A.has joined the army.B.has been i He has joined the army for ten years.和 He has been in the ar 1.Li Hong has ________ the army for 2 years.A.joined B.be in It is 3 years since he joined the army.为什么用is不用has been 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 is a s______ and he has been in the army for three years He is a s___ and he has been in the army for three years.