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 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(合作).

A. broke down

B. pulled down

C. turned down

D. put down

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