题文
In the past few years the worked ___ a lot of suggestions but none of them was adopted.
| A．put forward |
| B．have put forward |
| C．put out |
| D．have put off |
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In the past few years the worked ___ a lot of suggestions but none of them was adopted.
| A．put forward |
| B．have put forward |
| C．put out |
| D．have put off |
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