--If you have any trouble, be sure to call me.
---______________.
| A．I will think it over | B．I have no trouble |
| C．I am glad to hear that | D．I will. Thank you |
--If you have any trouble, be sure to call me.
---______________.
| A．I will think it over | B．I have no trouble |
| C．I am glad to hear that | D．I will. Thank you |
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