It is our duty to try to ______ production and reduce the number of things we make and buy.
| A．cut back on | B．put up with |
| C．hold on to | D．run out of |
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It is our duty to try to ______ production and reduce the number of things we make and buy.
| A．cut back on | B．put up with |
| C．hold on to | D．run out of |
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