—Lu does work hard.
—Yeah. _____ of his time ______been spent on studies every day.
| A．Four-fifths; has | B．Four-fifths; have |
| C．Four-five; has | D．Fourths-five; have |
—Lu does work hard.
—Yeah. _____ of his time ______been spent on studies every day.
| A．Four-fifths; has | B．Four-fifths; have |
| C．Four-five; has | D．Fourths-five; have |
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