He spent too much time talking on ______ phone while we were all busy at _____ work.
| A．the; / | B．a; / | C．/; / | D．the; the |
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He spent too much time talking on ______ phone while we were all busy at _____ work.
| A．the; / | B．a; / | C．/; / | D．the; the |
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