第 5 讲 介词一、选词填空inatin1The train is leaving _ (in, for) half an hour.2Mary is good_ (in, at) English but her friend doeswell_ (on, in) math.3 I havent heard _ (of, from) my aunt for nearlythree years.frominonon4 Jack often reads Chinese_ (on, in) the mor-ningand he also read it_ (on, in) the morning of the bigearthquake_ (at, on) May 12th, 2008.5Its nice_ (for, of) you to help my son_ (on,with) his chemistry.of with二、完成句子，每空一词1山上覆盖着雪。is covered with snowThe mountain_ _ _ _.2她站在那里，面带微笑。with a smile
