围绕本课标题 After the fire 大火之后（灾后重建）主题，AI 老师会出 若干个简单问题，
每个问题听完后，用 完整句子口头作答。
⚠️ 尽量说完整句子，不要只说一个词；优先用本课句型与词语：had been fighting the forest fire for nearly three weeks / get it under control / great trees had covered the countryside / smoke still rose up from the warm ground / the desolate hills / threatened the surrounding villages with destruction / would not only wash away the soil but would cause serious floods as well / the forest authorities ordered several tons of grass-seed / The seed was sprayed over the ground in huge quantities / The planes had been planting seed for nearly a month / the grass had already taken root / In place of the great trees / patches of green in the blackened soil