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