---I heard that Mr. Smith has become a triathlete.

---Oh, really? He has become ______ he wanted to be.

1. A.
   who
2. B.
   which
3. C.
   what
4. D.
   that

---I heard that Mr. Smith has become a triathlete.
---Oh, really? He has become ______ he wanted to be.

1. A.
   who
2. B.
   which
3. C.
   what
4. D.
   that

—I heard that Mr. Smith has become a triathlete.

—Oh, really? He has become ______ he wanted to be.

A．who        B．which          C．what        D．that

 —I heard that Mr. Smith has become a triathlete.

—Oh, really? He has become ______ he wanted to be.

A. who              B. which   C. what             D. that