Question

【题目】It has been two years since my brother ________ the army.
A.joined in
B.took part in
C.joined

Answer 1

【答案】C
【解析】句意: 自从我的弟弟已经参军已经两年了。join in参加活动；join参加团体组织；take part in参加活动。根据army是团体组织, 所以答案是C。