—Where’s your sister?
—She is in her bedroom．Listen!She is talking with her friends________the phone．
| A．by |
| B．with |
| C．on |
| D．for |
—Where’s your sister?
—She is in her bedroom．Listen!She is talking with her friends________the phone．
| A．by |
| B．with |
| C．on |
| D．for |
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