题文
【2014湖北咸宁】—Food safety is very important.
—So some rules ______ to stop people from polluting food.
| A．must make | B．must be made |
| C．must made | D．be made |
【2014湖北咸宁】—Food safety is very important.
—So some rules ______ to stop people from polluting food.
| A．must make | B．must be made |
| C．must made | D．be made |
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