He ________ the Party five years ago.

1. A.
   joined in
2. B.
   took part in
3. C.
   joined
4. D.
   became

He ________ the Party three years ago．He ________ a Party member for three years．

1. A.
   has joined; has been
2. B.
   joined; has been
3. C.
   joined; has become
4. D.
   has joined; has become

My father joined the party in 1945. He          a party member for about 50 years.   

A. had been  B. has become  C. had become  D. has been.

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