_____ playing computer too much is bad for your study and health.
| A．No doubt that |
| B．There is no doubt that |
| C．There are no doubt that |
| D．There isn’t doubt that |
_____ playing computer too much is bad for your study and health.
| A．No doubt that |
| B．There is no doubt that |
| C．There are no doubt that |
| D．There isn’t doubt that |
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