1．____________(vt.)弯下腰→____________(过去式/过去分词)→____________(adj.)弯曲的
2．____________(vi.)凝视；盯着看→____________(近义词)
3．____________(n.)主人→____________(n.)客人→____________(主人/仆人)
4．____________(v.)恐慌；惊慌→____________(过去式/过去分词)
5．____________(adj.)粗鲁的；无礼的→____________(n.)粗鲁→____________(adj.)有礼貌的→____________(n.)礼貌
