题文
You can not use the machine today because some parts __________ this week.
| A．are replaced |
| B．are being replaced |
| C．have replaced |
| D．are replacing |
推荐试卷
You can not use the machine today because some parts __________ this week.
| A．are replaced |
| B．are being replaced |
| C．have replaced |
| D．are replacing |
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