将下列句子变为被动语态,每空一词: 1. We can finish the work in two days. The work ________ _________ _________ in two days. 2. They produce silk in Suzhou. Silk _________ _________ in Suzhou. 3. The children will sing an English song. An English song ________ _________ ________ by the children. 4. You needn'下列四国中,哪一个国家与其他三国走上资本主义道路的途径不同:A.英国B.法国C.俄国D.美国