改错Bill continued to ask which school he had been the last ye

改错Bill continued to ask which school he had been the last ye 请问：He had at last been allowed to send a fax in which he inf he had at last been allowed to send a fax in which he inform I ask her which of the cities she had been to was the most b in which however,he had at last been allowed to send a fax i However, he had at last been allowed to send a fax in which 改错 At last the thief took out everything which he had stoien 改错:He said me that he had been to the Great Wall twice. Bill can takes the subway to school 单句改错 He told us the great wrong which had been done to him.拆分成两个句 The letter he had been looking forward to（arrive） at last. The letter he had been looking forward to came at last this