This is the third book that he has written in the past five years, the first of ________ I really enjoyed．

1. A.
   which
2. B.
   that
3. C.
   those
4. D.
   then

This is the third book that he has written in the past five years, the first of       I really enjoyed.

A．which B．that    C．those        D．them

This is the third book that he has written in the past five years , the first of ____ I really enjoyed.

This is the third book that he has written in the past five years , the first of ____ I really enjoyed.

A．those         B．that             C．which           D．them

This is the third book that he has written in the past five years, the first of _______ I really enjoyed.

A. which              B. that              C. those         D. them