题文
I wish to thank Professor Smith，without________help I would never have got this far.
(2012·天津，7)
| A．who | B．whose | C．whom | D．which |
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I wish to thank Professor Smith，without________help I would never have got this far.
(2012·天津，7)
| A．who | B．whose | C．whom | D．which |
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