The plan    ___ just because people were unwilling to co-operate(合作).

A. broke down                  B. pulled down  C. turned down              D. put down

The plan    ___ just because people were unwilling to co-operate(合作).

A. broke down         B. pulled down  C. turned down     D. put down

The plan ______ just because people were unwilling to co-operate.

A. broke down       B. pulled down      C. turned down      D. put down

The plan ______ just because people were unwilling to co-operate.

1. A.
   broke down
2. B.
   pulled down
3. C.
   turned down
4. D.
   put down

. The plan    ___ just because people were unwilling to co-operate（合作）。

    A. broke down             B. pulled down         C. turned down           D. put down