1. My mother said, "You should wear warm clothes when going out"\

=> my mother said that I should wear warm clothes when going out

2."You look tired, you should go to see the doctor", Lan said.

=> Lan said that I should go to see the doctor

3. "Come in, please", the saleman said.

=> the saleman told me to come in.

4."Don't touch in anything there", the old man said.

=> the old man told me not to touch in anything there

5. My grandmother told me,"Can you send me this letter?"

=> My grandmother told me to send her that letter.