题文
—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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