12. What period will follow Professor Johnson's talk?Aperiod.
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13. What refreshments have been prepared outside for the guests?Some chocolates,.
14. When will Professor Johnson finish his talk?At abouttonight.
15. Why must Professor Johnson leave by 8:30?He is takinghome tonight.
孟子有言:“以服人者,非心服也,力不赡也;以服人者,中心悦而诚服也,如七十子之服孔子也。”