The English play ______my students acted at the New Year's party was a great success.

1. A.
   for which
2. B.
   at which
3. C.
   in which
4. D.
   on which

The English play __________ my students acted at the New Year’s party was a great success.

A. for which    B. at which  C. in which    D. on which

The English play __________ my students acted at the New Year’s party was a great success.

A. for which    B. at which  C. in which    D. on which

The English play__________my students acted at the New Year’s party was a great success.

A.  for which      B.  at which       C.  in which      D.  on which

The English play ______ my students acted at the New Year’s party was a great success.?

A.for which

B.at which?

C.in which

D.on which?