题文
It is required that all traffic participants should ______ the traffic rules to make traffic safer and faster.
| A．perform |
| B．observe |
| C．support |
| D．possess |
推荐试卷
It is required that all traffic participants should ______ the traffic rules to make traffic safer and faster.
| A．perform |
| B．observe |
| C．support |
| D．possess |
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