用适当的关系代词填空:1We need comrade_____can help you. 2The man ___you saw yesterday was a doctor from Beijing 3This is a story about a communist fighter ____name或the name of ______is Liu Hu-lan 5Here is a book _____will give a lot of useful knowledrge 6This is the song _____we like best
2The man (who/that/不填)you saw yesterday was a doctor from Beijing 3This is a story about a communist fighter(whose)name is Liu Hu-lan 5Here is a book (which/that)will give a lot of useful knowledrge 6This is the song (which/that)we like best