---When ______ again?  ---When he ______, I’ll let you know.

   A. he comes; comes          B. will he come; will come   

   C. he comes; will come       D. will he come; comes

 ---When ______ again?  ---When he ______, I’ll let you know.

   A. he comes; comes          B. will he come; will come   

   C. he comes; will come       D. will he come; comes

——When______again? ——When he______,I’ll let you know.
   A.will he come;will come    B.will he come;come
   C.he comes;comes            D.will he come;comes

—When ________ again?

—When he ________, I'll let you know.