Question

I ________ the League．I ________ a League member for six months．

1. A.
   joined; an
2. B.
   have joined; am
3. C.
   joined; was
4. D.
   have joined; have been

Answer 1

D
join意为“参加；加入”，是短暂动词，而for six months是一段时间，应和延续性动词连用，故将join转换为be in。