Mybrother_______thearmytwoyearsago.Hehas______fortwoyears.
A.joined in ; joinedB.joined ; been a soldierC.joined in ; become a soldierD.joined; joined in在线课程B
解析：
这题第一空考查词组：join the army“参军”，第二空填表示状态的词，been a soldier和for two years连用。选B。