语法专练。将下列句子由直接引语变为间接引语 1. The teacher said,'Don't be late again,Mary.' _________________________________________ 2. The boy said,'How cool the film star is!' _________________________________________ 3. He said,'Is she your sister?' _________________________________________ 4. 'You'd better start tomorrow,'Tom said to Alice. _________________________________________ 5. The lady asked me,'What are you doing this for'?' _________________________________________