小题1:Lingling said that she was talking with Tony on the phone then.
小题2:Tom’s mother told Tom to watch it and tell her the result.
小题3:She asked me if/whether I knew the news.
小题1:直接引语是陈述句，可用that来连接，通常人称改为第三人称，本题时态改为过去进行时，故本题的答案可以为Lingling said that she was talking with Tony on the phone then.
小题2:直接引语是祈使句可用told sb to do sth来表示，故本题的答案可以为Tom’s mother told Tom to watch it and tell her the result.
小题3:直接引语是一般疑问句，人称改为第三人称，时态改为过去时，用if或whether来连接一般疑问句的正常顺序，你和我互换，故本题的答案可以为She asked me if/whether I knew the news.